> A big problem is that Git has no concept of what Perforce calls "exclusive checkout" where only one person can claim and file and work on it. That's a deal breaker for most. Communication is hard. Make it apparent that someone has claimed a file.

Is this a problem particularly in the games industry for some reason? Because in "regular" development, people always think it'll be a problem before they try it. Turns out not to be, especially with the great merge support you get from git.

I could see it being an issue for binaries though. If anything, I'd expect people to balk at having to clone the entire history of large binary files, which don't typically delta-compress very well.