This is a recipe for disaster. Arduino is great for education/tinkering. Qualcomm won't sell you anything even if you are ready to commit to buying 1000s. I tried to source some Qualcomm chips for a startup @ 10k qty and was told there would be no information or support. Qualcomm can have a much bigger market if they simply open up some product lines for distribution like MediaTek do. China has a way more vibrant, in…
This is the exact reason why they bought Arduino... So now startups have a way to buy say 1,000 devices for prototyping. Qualcomm gets used to supporting smaller developers/startups/tinkerers and will hopefully push different types of chips into the Arduino product lines.
For this, Qualcomm does not have to buy Arduino for a big amount of money: Qualcomm could simply offer this option on their own and save the acquisition cost.
Addendum: For the acquisition cost, Qualcomm could do a lot of marketing of their offering towards makers.