I can see a lot (if not all) businesses opening up accounts on Bluesky and using it for customer services, but this requires Bluesky/third parties to have the sort of tools to manage queries and keep track of DMs, checking account credentials and so on. Tools that exist in great numbers from X, assuming Elon didn't break half of them from working.
I can't see businesses quitting X anytime soon, but as more and more people move they need to be on Bluesky. Personally, I prefer Threads in terms of engagement and conversation but think in the long run, Bluesky will become the closest to being a replacement. After all, it looks most like what Twitter was.
Meta will hopefully add similar features to Threads too, and companies will then seek to use that too - but it will come down to the software tools. If a social media management tool can work on X, Threads, Bluesky and others then it becomes even easier (and cheaper for companies to manager). I have to admit I've not looked at the software for some time, but any big company is using dedicated software because we've come a long way from one person being in charge of an account.
Sure, some companies might have set up an account and will post periodically, more as a placeholder, but that won't work in the long-term.
It's a real shame what Elon has done to X because it generally worked well before. You could use it for whatever you wanted, from just following businesses to using it as a 'town square' or whatever Elon talks about it becoming now - and you didn't have right-wing, racist/nationalist, nonsense rammed down your throat from accounts you don't even follow.
