Much of the world's DRAM stock is sitting idle in consumers' local machines and on-prem servers. If that DRAM gets some use, even "inefficiently", that's a meaningful decrease in demand.
It's easy to rattle off a half-dozen different vectors of likely enshittification over the next few years -- ranging from increasing censorship, to lower rate limits, to removal of existing features and forced addition of unwelcome new ones, to extortionate price increases, to unexplained and irreversible account bans. The only way to avoid them all is by running weights you own on hardware you control.
How smart and how fast is your local model? Those are certainly important questions, but "Does it exist at all?" is more important.