By themselves, no.

But they're the people friends and family ask for help when deciding to buy a computer. It's why Intel has slumped. Most people don't know what a CPU does, so that's not why they're picking Intel or AMD - they're choosing based off recommendations from more knowledgeable people.

For many years AMD was uncompetitive compared to Intel / Nvidia. Intel had 80% of the market at one point. It probably would have died off if it wasn't for folk that wanted Linux compatibility. Many run FOSS because of privacy. Linux is a key part of that.