This is my personal observation, but GitHub appears to be a much more ambitious company, now that they are part of Microsoft. With a CEO that understands both the open source and the enterprise world and with Microsoft cash at hand, I don't think spending money to make search better would cause any concerns.
Doing technical things that GitLab, Bitbucket, etc. can't is quite valuable. It also helps with recruiting, since smart people want to work on difficult problems.
It may well be costly to maintain, but I think the operating cost would be well within the realm of an incumbent that wants to maintain and expand their reach. I've been studying the code hosting space for quite sometime and GitHub, from an outsiders perspective, appears to be much more focused and ambitious, which should cause serious concerns for GitLab.
Doing technical things that GitLab, Bitbucket, etc. can't is quite valuable. It also helps with recruiting, since smart people want to work on difficult problems.
It may well be costly to maintain, but I think the operating cost would be well within the realm of an incumbent that wants to maintain and expand their reach. I've been studying the code hosting space for quite sometime and GitHub, from an outsiders perspective, appears to be much more focused and ambitious, which should cause serious concerns for GitLab.