This had global consequences - the disappearance of one quarter of the world market is not an easy event to deal with - and almost caused the bankruptcy of several turbines manufacturers (some were bought out). Ever since, manufacturers have probably undersized their investments, in order to be able to deal with such a potential drop in demand, and they mostly avoided the US as a production base as a result, even though there are serious logistical advantages in this (heavy) industry to be located near your market.

There is no secret: the only way to have manufacturing investment in an industry which needs no subsidies, but a specific regulatory framework is to have stable policies and, dare I say it, an industrial policy to promote both the wind industry (a good thing in itself) and the wind turbine manufacturing industry.

This is still missing, right now. States are doing this at the local level, but it would make a lot of sense to do it at the federal level.