The 2012 Olympics glimmer on London's horizon, but the Games are more than a smiley-faced sportstopia. The cost of hosting the Olympics has skyrocketed while private funders have evaporated, leaving the government holding the fiscal bag. Meanwhile, security officials have the green light to militarise the public sphere. The Games have become the pure-grade expression of celebration capitalism, the feelgood complement to Naomi Klein's "disaster capitalism".

Host cities routinely underestimate the costs and overstate the benefits of the Games. London is no exception. The city's bid proclaimed: "Every sector of the economy will benefit from the staging of the Olympic Games." Originally slated to cost about £2.4bn, Olympic costs jumped to £9.3bn by 2007. The National Audit Office noted that public-sector funding has almost tripled, while private-sector contributions dwindled to less than 2%. Recently, the House of Commons' public accounts committee revealed costs were "heading for around £11bn". Meanwhile, Olympics critic Julian Cheyne of Games Monitor calculates costs at £13bn. A Sky Sports investigation included public transport upgrade costs, catapulting the five-ring price tag to £24bn.

The public-pays-private-bails theme crystallised in the construction of the Olympic village. Originally envisaged as a £1bn centrepiece of London 2012's urban regeneration plan, the village was to be financed by Australian developer Lend Lease. (The deal reeked of cronyism – David Higgins, the chief executive of the Olympic Delivery Authority until February 2011, previously headed Lend Lease.) But the 2008 economic collapse and credit crunch led private capital to abandon the project, leaving it to the British government. In spring 2009, Olympics honchos admitted the village would be "fully nationalised" – that is, paid for by taxpayers.

Olympics history is marked by the production of metropolitan jungles teeming with white elephants. London organisers were anxious not to add to the herd, so in August 2011 they sold the village at a taxpayer loss of £275m to the Qatari ruling family's property firm. Quizzically, culture secretary Jeremy Hunt championed the transaction as a "fantastic deal that will give taxpayers a great return and shows how we are securing a legacy from London's Games". Such surreptitious subsidies are standard practice with Olympic-induced urban development. Host governments have the incentive to backstop projects to avoid embarrassment on the global stage, while private firms punt responsibility when the going gets tough.

Meanwhile, security officials are exploiting the Olympics as a once-in-a-generation opportunity to multiply and militarise their weapons stocks, laminating another layer on to the surveillance state. The Games justify a security architecture to prevent terrorism, but that architecture can double to suppress or intimidate acts of political dissent. The Olympic Charter actually prohibits political activism, stating, "no kind of demonstration or political, religious or racial propaganda is permitted in any Olympic sites, venues or other areas". What "other areas" means is open to broad interpretation. So despite Olympics human-rights rhetoric, the charter dictates – if indirectly – that local authorities squelch political activism. On cue, London police recently vowed to scour social media to sniff out any organised protests or disruptions.

The Olympics will militarise London, with surface-to-air missiles at the ready, a Royal Navy battleship moored offshore, and soldiers on patrol. After initially estimating 10,000 security guards would suffice, the London organising committee determined more than double that number would be required. The ministry of defence is filling the gap with about 13,500 military personnel, 4,000 more than are currently based in Afghanistan. Not placated, the US declared it will send its own security to London, including 500 FBI agents.

The Olympics afford an opportunity to test-drive high-tech equipment in an urban setting. Lightweight aerial drones will hover above while "combined firearms response teams" – elite police units replete with snipers – roam below. Thus London 2012 will tender a legacy not touted in bid materials: a repression-ready security state. The military-grade technologies secured during the Olympics-induced state of exception become normalised for workaday policing in the wake of the Games. And this repressive urbanism is expensive: a whopping £1bn and counting.

In The Shock Doctrine: The Rise of Disaster Capitalism, Naomi Klein explains how capitalists unabashedly capitalise on catastrophe. Disasters create collective states of shock that soften us up to the point where we hand over what we'd otherwise ardently defend. In the wake of disaster, while the general population reels in chaos, corporations and their government collaborators ransack the public sphere and slosh thick dollops of neoliberal policy on to the public's plate.

The 2012 London Olympics are shaping up like a gold-medal playbook for "celebration capitalism" – disaster capitalism's affable cousin. Both occur in states of exception that allow plucky politicos and their corporate pals to push policies they wouldn't dream of during normal times. But while disaster capitalism eviscerates the state, celebration capitalism manipulates state actors as partners, pushing economics rooted in so-called public-private partnerships. All too often these public-private partnerships are lopsided: the public pays and the private profits. In a bait and switch that's swaddled in bonhomie, the public takes the risks and private groups scoop up the rewards.

The Olympics promise to conjure athletic dexterity and scintillating competition. But like it or not, other games are in the works – Olympics bigwigs are uncorking celebration capitalism.

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