I would say the biggest problem is the music production on Linux. Especially VSTs - those are still hit or miss. And unfortunately the DAWs you mentioned doesn’t have Linux support.

For example I was really trying to do music for several years on Linux, but in the end I gave up and now I’m dual booting Windows… 😿

Does anyone know the reasons?

Solus is a great choise for desktop. The Solus team is doing well lately. :) They have even weekly updates on updates. Really great comminication towards users.