I think the main problem with Git Lab and similar services is Git's inability to store anything other than code. If issues, wikis etc. would be stored in a Git

I think the main problem with Git Lab and similar services is Git's inability to store anything other than code. If issues, wikis etc. would be stored in a Git repo itself, with the services potentially offering conveniences like web/email access etc. switching would be trivial. Git hosters would then need to be very, very careful and extremely competitive, as moving somewhere else would be a matter of minutes. There are some effords on this front[1], but I don't really know if anything will come of it. [1] https://github.com/sit-fyi/sit https://github.com/sit-fyi/sit