Just to give you some quick examples how the 3080 is justifiably a flag ship even without a larger power supply. It does have more storage/block capacitors too if that means anything to some users.
- 3080 has XLR I/O for the FL/FR
- Second/or 3rd from the top ESS DAC, i.e. ES9026 Pro vs ES9007 (apparently same specs as the ES9006 but I couldn't find the datasheet for the ES9007 no matter how hard I search)
- 11.2 preout vs the 7.2 preout that the 2080 has
- 11 channel processing, so you can do 7.1.4 Atmos, vs the 2080's 7.1.2 or 5.1.4 limit.
If they were to go with a larger power transformer, a) the unit will have to be physically larger, b) it would cost much more, as we all know you need 2X the power output to get only 3 dB more spl and you need 6 to 10X spl to perceive twice as loud. Even with a transformer twice the size, the unit will still be limited by the output devices, so the output devices will have to be larger too, and that's a lot of high power transistors, example: 4 per channel, so 36 to cover 9 channels, all for the sake of only 3 dB spl !!
Power transformers, large 80 V block capacitors, and output devices/transistors are costly. It's not hard to see which way their cost/benefit analysis would lead them to.