Earlier quoted context omitted.
There is a counter-argument to git -- namely Sun had TeamWare[1] (the prequel to BitKeeper) and thus you could argue that git is still a "shoddy reimplementation". But this of course ignores the fact that TeamWare was almost completely unknown outside Sun until BitKeeper came along (at which point it was just an element of BitKeeper's history), and that git is objectively superior in many metrics to TeamWare. Persona…
Quite unfortunately for all of us condemned to use GNU/Linux: - GCC exists because Sun Studio compilers weren't free back then; - Apache is the next generation NCSA web server; - nginex is a re-invented Apache wheel. Do you have any more examples to get corrected on? I'll be glad to set you straight, in the hope that unlike your Linux buddies you are capable of learning. They are simply amateurs wanting to play engin…
Now, I already know that you're going to say that "zfs send" already does these things -- but it really doesn't. First of all, ZoL only recently got encryption support so built-in encryption with ZFS only came around recently (and was developed by someone from the GNU/Linux community, by the way). Also, ZFS's dedup is so expensive that it's very strongly recommended that people don't use it unless they really need it. Deduplication with restic and borgbackup is content-based which means that it's far more resilient to shifting bytes in files and it's effectively free because everything is stored as a CAS (to be fair, it's only mostly free because people don't use it as a filesystem).
Again, I really am not bagging on Sun here. I just think it's quite ludicrous that you're saying that any engineer who didn't work at Sun pre-2010 never invented anything. I refuse to believe that you honestly believe that, purely based on how ludicrous of a concept it is.