They completely ruined Atheros wifi chips for instance. Pre-buyout they had the best featureset, and even open source firmware. Now they have a massive closed firmware driverlike-blob and you can't even set your MAC address. Pathetic.
If this happened, AMD wouldn't be able to make x86 and Intel wouldn't be able to make x86_64 anymore. [1]
Also Intel is very very keen to have AMD continue existing and manufacturing x86 CPUs because if they don't, the antitrust boffins will come after Intel.
[1] www.kitguru.net/components/cpu/anton-shilov/amd-clarifies-cross-license-with-intel-change-of-control-terminates-agreement-for-both
At the close of the 19th century, the Jules Verne novels occasionally featured an 'arms race' for the biggest possible cannon.
Then in the 20th they just slapped smaller ordnance on tanks and planes. Mobile platforms ...