To a degree, it already is business as usual for these firms (look at their underinvestment in IT infrastructure). The issue for the self-hosting community is that not enough of the population is technologically literate enough to understand the risks of using these platforms (insert any Meta/Bytedance/Microsoft/Amazon platform here), and the critical mass of users will remain perpetually vulnerable.
With that being said, for those with the literacy required, self-hosting is a secure breath of fresh air.