That’s not a “real” problem, plenty of companies are already doing that. Denon, Sonos, Beosound… Yes, obviously if your Wi-Fi network is shit that will reflect on the surround set-up.
But it should not just be up to Wifi. B&O are one of the founding members of WISA.
That doesn’t really matter though, as WiSA hasn’t been the huge success that its founding members hoped it would be.