Because companies offering better hardware with lower MHz and GHz lost huge market share. Companies, especially hardware vendors, should always give the market what it wants if they want to stay in business. I faced an uphill battle over a decade ago trying to argue why Alpha's RISC flexibility and PALcode led to huge performance & safety increases when utilized properly. I demonstrated custom benchmarks. They went with the Intel stuff like most of the market and I suffer through maintaining such messes to this day.