Initial announcement, 2015: https://blog.jetbrains.com/blog/2015/09/03/introducing-jetbr...
Community anger a couple days later: https://bytecrafter.blogspot.com/2015/09/how-jetbrains-lost-...
Significant changes after hearing the feedback, a couple weeks later: https://blog.jetbrains.com/blog/2015/09/18/final-update-on-t...
I'd trust Jetbrains -- as a company with a few decades of experience serving devs and only devs -- much more than your typical get-rich-quick cloud SaaS startup that's just looking for a quick exit.
Yes, they need income too, but they're one of those few tech companies not aiming for hypergrowth, just a sustained user base.
Even though VScode gets all the love these days, and Atlassian and Github and CircleCI etc. get all the enterprise use, they've made some really cool products of their own too (Space, TeamCity). And their IDEs continue to be excellent.
It's not like TeamCity even has a secret catch... their cloud version DOES have a monthly cost already. It's only the self-hosted version that's free.