A system of passive speakers, an amplifier or two, and the complexities of the user interface (I can't hear the TV, which of these three remotes do I need to push the "source" button on?) isn't actually a good experience -- and in the middle of the market, there's no particular reason it needs to stay this way.
At the highest end, people want analog sound processing. At the bottom end, we have cheap powered smart speakers using Bluetooth for connectivity. In the middle, we could easily have good quality powered speakers and some reasonable mixture of wireless and wired interconnect that didn't require all the legacy nonsense of a separate amplifier/audio receiver.