In many ways ARM is a much more open architecture than x86, the license for which is restricted to Intel, AMD, and *kind of* VIA and not open to anyone else. By contrast, any company that can pay to license the ARM instruction set can make their own ARM chips.Microsoft, and Windows PC are the future. Measly 18 percent for Mac.
Maybe even less when everything switched over to ultra closed APPLE silicon.
Anyways, Microsoft and big PC manufacturers seem to be taking a much stronger interest in Windows on ARM since the M1, so if the future is Microsoft it’s probably a future of custom ARM silicon regardless of how things shake out.