When members of the Turkish opposition sought to embarrass Prime Minister Recep Tayyip Erdoğan in February by publishing voice recordings hinting at corruption, they didn’t go to the traditional media, nor did they start up their own website. Instead, they went straight to YouTube, posting the recordings there and publicising the link on Twitter, where it spread rapidly, eventually leading Erdoğan to block the platform.

The block lasted barely two weeks; protests led to lawsuits, which led to the country’s highest court ruling that the ban violated freedom of expression. Things might have been left there, but instead the Turkish government contacted Twitter and, using the company’s own “country-withheld content” process, requested the removal of specific content. Twitter complied.

Similar stories play out every day around the world. Speech on the vast internet – where just a decade ago an individualised website or blog was a status symbol – has been effectively centralised into a handful of platforms. Each month, more than one billion people (or about one-seventh of the world’s population) use Facebook and YouTube; both platforms cite 80 per cent of their traffic as coming from outside of the US. Twitter isn’t far behind, with around 650 million active users worldwide.

These are truly global platforms. Centralised, free, and easy to sign up for, these sites attract a broad swath of the world’s public, who use them to engage in political and social debate, organise protests, and of course, chat with each other.

Social media has, in many ways, taken on the role of the public sphere, as defined by German philosopher Jürgen Habermas as “society engaged in critical public debate,” and characterised by a feeling of inclusivity and freedom of expression and association. And yet the online social spaces standing in for the public sphere are private ones, owned by billionaires and shareholders. Nevertheless, we treat them as public spaces.

The trouble with private companies controlling our speech is that they are subject not only to shareholders, but also to governments. Many of the most popular social media companies – most notably Twitter, which once called itself “the free speech wing of the free speech party” – profess a commitment to free expression. But in their efforts to provide access to their services to users around the world, these companies often face an unfortunate choice: to avoid being blocked by a government’s censorship apparatus, they must sometimes agree to take down content, at least in a given country.

Take, for example, recent decisions made by Twitter and Facebook to block content at the behest of Pakistan’s telecommunications authority. This isn’t the first time the companies have responded to a legal request (both publish transparency reports outlining where they do respond), but historically, the companies tend to be conservative in their compliance, blocking or removing content only when not doing so could endanger employees in-country. In addition, Pakistani rights groups have suggested that the legal order may not be so legitimate after all.

In any case, when a company unnecessarily complies with censorship orders from a foreign government, it sends the message to users that profit is more important than free speech, something that all of the aforementioned companies count amongst their values. Furthermore, by making the company – and not the government issuing the orders – the “bad guy,” it becomes harder for users within a country to fight back, and less clear to users that the governments seeking censorship are the real enemy.

Social media companies have essentially erected new borders where such borders did not exist before. While it’s true that many governments have the technical authority to censor websites, doing so often backfires: Just look to Turkey, where protesters took to the streets after the government blocked Twitter, or Tunisia, where a brief Facebook ban in 2008 resulted in protests so large the ban was almost immediately reversed.

In doing governments’ bidding for them, companies are helping to normalise censorship and decrease organising toward a freer and more open internet. Instead, corporations should take the high road. Social media has, in a short span of time and for better or worse, become our go-to place for organising, sharing, arguing, and connecting with friends. If companies were to take a stand against censorship, they would demonstrate to their global user bases that freedom of expression is a universal value that should apply to all of us.

Jillian C York is a writer and free speech activist