I agree and it's even more crowded for instruments which have greater reliance on precision for quality any way. The margins on pedals are better than amps once the R&D is done, the cost of parts is peanuts when purchased in bulk and the upfront capital investment in tooling etc. is lower. Anyone can start a pedal business if they have the knowledge. For example Land Devices started with one pedal in 2017, a tribute to an obscure fuzz pedal called the Interfax Harmonic Perculator which sparked the interest of people behind Premier Guitar and Reverb. They featured it and pretty soon the $500 investment in parts for the initial run of 20-40 pedals snowballed into a fully fledged production line. For someone who is tone hunting, pedals are way more accessible than amps, players are more inclined to buy in greater volume so there's less risk to some degree.
If I was Alex, I'd be thinking about what customers would most likely use with the cabs. Amps seem like a natural choice but they'd have to be game changing in the same way as the cabs were game changing. Some amp companies offer voicing options, some offer features you'll probably never need, others go down the vintage tribute route, yet more target price points. I'm not sure there's much to do there unless there's a shift in technology or construction. But hell, I wouldn't mind a reasonably priced valve amp with tuner, parallel and serial effect loops, 400w/50w power scaling, easy to replace parts and self biasing to reduce reliance on an amp technician for maintenance. That's been missed in the bass market so far but guitarists have many of those features already.