The cloud service business model usually seems to turn into some form of bait+switch, based on getting loads of new users in, some percentage who will become quite dependent on the service, then cranking up the prices.
If something is free, cheap, and relatively new, be prepared for disappointment.
I wouldn't say it's an intentional bait and switch, just the "natual" pivot to b2b/enterprise sales where its a lot more straightforward with how to make money, I guess.
I have a hard time seeing how offering something for free that costs you something to provide, then making it no longer free once you have a large number of users, is not an intentional bait and switch. How did they think they were going to keep providing the free offering at scale?
If something is free, cheap, and relatively new, be prepared for disappointment.