Could have been Jassys equivalent of Beso’s AWS, but unfortunately he’s a lousy leader with no imagination beyond the quarterly results.
And Intel is building an "AI fabric" chip for AWS, though its not clear who designed it.
Apple designs their own cores and Qualcomm is starting to. Most people just grab ARM's reference designs. They're sorta in-house in that they're putting it together, but they aren't doing the design work of actually making their own cores.
Qualcomm already did for many years! The Snapdragon line from 2008-2016 used custom Scorpion/Krait/Kryo cores before they went to Cortex A73 cores in the Snapdragon 835.
Only now, after buying the Nuvia CPU design team, they have begun to use again their own CPU core designs, first in the laptops introduced a few months ago and then presumably also in the smartphones of next year.
While many companies have designed Arm cores, only Apple has consistently outperformed the Arm company and now Qualcomm might have a chance to do that, with a team that includes many former Apple designers.
The server Arm cores that have been demonstrated until now by the Ampere company are not impressive, being weaker than the Arm-designed cores used by Amazon or Microsoft.