Given the amount of money in the bank versus many wannabe startups, they are somehow right.
And yes, ClearCase does stuff that many alternatives to this days still has issues dealing with.
With ClearCase I already had object files caching across the build cluster without extra stuff, a nice graphical management tooling, and I never messed my view specification files, like I routinely need to fix my Git repos.
ClearCase doesn't even have the concept of related changes in multiple files being part of the same commit. How you can even compare that to a modern VCS I have no idea.
And yes, ClearCase does stuff that many alternatives to this days still has issues dealing with.
With ClearCase I already had object files caching across the build cluster without extra stuff, a nice graphical management tooling, and I never messed my view specification files, like I routinely need to fix my Git repos.