I’m in a similar situation. If you change your pricing model so that a lapsed subscription means an end to updates rather than an end to access, I’ll upgrade my Tower 2 license immediately.
I do understand that your current licensing model is probably very effective at getting big revenue out of corporates. I am a solo user who interacts with git maybe once or twice a week. I know I’m not an important customer for you, but it is sad you can’t even throw a bone to the little guy.