On prem is starting at $25/mo/user. This tool includes chat, wiki etc, so you want to bring business people too. Suddenly it's couple grands per month + hosting fees, and you're still hostage, as despite using own servers it will stop working as soon as you miss scheduled payment. Since Spaces integrate half of functionality your company needs - of course you will pay.

Compare that to other Jetbrains products, where you pay similar amount once and you can use it forever and you'll see how huge step back it is.

I'm happy for everyone in this thread, that it's trivial for your organization to budget $100k+ (realistically, for mid-size org it's something like this to fully integrate and then pedal back from solution of this size if suddenly you are out of the money - eg. Atlassian estimates 9 month+ migration for its jira instances), however for me it's still kinda big bet :-)