They’ve taken a big pile of VC funding, so the answer to
your first question is yes.
Meanwhile, the biggest player (by far) in the market just abandoned dreams of an IPO. Gitlab is a distant third place in that market, and has a revenue model that is best described as “like Github, but cheaper.”
IPOs are only viable if you have a business capable of supporting them.
There are only two possibilities I see: acquired by Atlassian and merged with Bitbucket, or by a low-tier cloud player with deep pockets such as Aliyun or Oracle. The IPO market just isn’t that buoyant at the moment.
Is Gitlab a distant third? I didn’t know if they are in second place or not. But distant seems too much. Is Bitbucket in second place? Any numbers or references you have?