I'm a big fan of the Jetbrains subscription model - you pay for an annual subscription and if you choose not to renew, you get a perpetual license to the last version of the software when you subscribed.

On another note, never deal with a company that can effectively hold your data hostage. If they don't provide an easy way to exfiltrate your data, you send a strongly worded email and do your absolute best to not rely on them.