The Onkyo US company that used to sell these no longer exists. Same thing for Pioneer. If these brands reappear, it will be as new companies, with unestablished reputations (not necessarily a bad thing in the case of Onkyo). As a practical matter, since SONY last touched their receivers in 2017, there are two remaining mainstream receiver brands: Denon and Yamaha.
Yes and no. Onkyo USA, the USA distribution arm, no longer exists, but the actual Onkyo parent company that does the R&D is still in business. So far, anyway. Source: Onkyo USA Hands Distribution to Klipsch: Is Onkyo in Trouble? | Audioholics
Can’t believe people still buy surround sound systems.
Yes, I’ve also read the Audioholics story that comes up with an Onkyo USA search. The US part is the part that matters to US buyers. Try and get support remotely from Japan. I’ll wait while you wait…