It's behind a paywall. Does this disallow corporations and non-USA residents from buying property?

That works here in Switzerland sort of - prices are still super high but more because of local wealth, not Russians and Chinese buying everything. There are underdeveloped places where foreigners are allowed to buy - Andermatt for example is filled with rich Americans.

Not in any meaningful way. This would be more upsetting if corporate buyers were a significant part of the problem.