Why I agree with many points you make... let's keep Perforce out of it. The amount of damage that program done to my source code, and the amount of pain caused by it in daily use tells me that 10 minutes will not cut it.
Here's a simple example of how people shoot themselves in the foot with Perforce all the time: it makes files you edit read-only, and then you run with your pants on fire trying to figure out how to save your changes, because the system won't let you do that. And then you do something dumb, like copy the contents of the file you aren't able to save someplace else, and then try to incorporate those changes back once you've dealt with the file that Perforce wouldn't save. And then end up with a merge conflict just working with your one single change that you are trying to add to your branch.
I never regretted never having to touch Perforce ever again. Just no.
Here's a simple example of how people shoot themselves in the foot with Perforce all the time: it makes files you edit read-only, and then you run with your pants on fire trying to figure out how to save your changes, because the system won't let you do that. And then you do something dumb, like copy the contents of the file you aren't able to save someplace else, and then try to incorporate those changes back once you've dealt with the file that Perforce wouldn't save. And then end up with a merge conflict just working with your one single change that you are trying to add to your branch.
I never regretted never having to touch Perforce ever again. Just no.