>>29
compiler writers and assembly programmers spend time and money
Both GCC and clang are free and open source, and their writers didn't get a dime for their work. Oh and before you bring up nonfree compiler software, I'll just remind you that it is evil and a plague.
Intel and AMD spend billions on register renaming, out-of-order execution, flag renaming, micro-ops, and floating point stack optimization to work around the limitations of a 70's subscalar accumulator-based register-starved ISA in hardware
Nobody forced either them to use that crappy ISA for new designs -- if they lost money cause of their own bad decision, well, tough shit.