call me cynical but I can't imagine this ending very well. Even if qualcomm does nothing to alter the operations at Arduino, what happens if they go belly-up in a decade?
Arduino wasn't in the best shape some months ago to be fair, quite some people took offers to lower their working hours with a lower salary too.
IDK, what kind of innovation we need from Arduino now? Arduino IDE exists and is open source. Arduino Uno exists and is open source. Arduino cores, both from Arduino itself and third-party exist and are open source. Not sure how they made money recently, I hope they are up to something good with Qualcomm.