switch from Finale to Musescore

I am a Finale user and am now forced to look for an alternative. I am now investigating the possibilities of Musescore and am positive about it.
However, I have a thousand Finale files. I would very much appreciate it if a software developer would make a good conversion program from mus files to another program. XML is far from perfect and it takes us a lot of time to update everything.
I hope Musescore wants to invest in this. Reading a mus file directly without errors would be fantastic.
Then you have me as a new user and I think many with me. We would also be willing to pay something for it.
I am curious what you do with it.

Kind regards, Wietse