That's because they have backroom deals with the manufacturers. Its impossible to compete when the manufacturers are actively hostile and don't provide the fir

That's because they have backroom deals with the manufacturers. Its impossible to compete when the manufacturers are actively hostile and don't provide the firmware/code/specs in a way that the hardware can be supported independently. Some even use this to spy under an umbrella of plausible deniability, there was an article just recently about Qualcomm chips that did this (checked in) at the firmware level.