Only use TeamCity professionally but the licence model is transparent and a doddle. No bloated loaders, wanky arbitrary rule or ridiculous gotchas, and the software is yours to keep (minus support) thereafter. They even recently released CVE mitigation patches for 2016 versions recently. I didn’t resent paying them money at all.
To be fair my Windows experience was far simpler than Linux, if less fulfilling. What got me was a combination of constant attacks on privacy, W11 and the enshittification of the UI as well as general Microsoft corporate tomfoolery (have dealt with them for work, not a fan of their monopolistic EEE tactics).