I think there is another factor that is seeing a correction and that is the geography/terrain epiphany that some new aspirants have had. in the MTB arena, most companies market the gnar crushing high travel bikes to people who lack skill to ride moderate features without the crutch of surplus suspension. But when they develop skill the lightbulb goes off that the tool they have is overkill for what they actually ride. I found a top fuel 8 in my size and grabbed it. I updated the rear shock. Risers, bars and saddle. I had intended to do more until I realized it was perfect for my needs as is. The shops I went to kept trying to upsell longer travel bikes under the guise of fit. I need pedaling efficiency in flyover country. I have the skill to ride just about anything just about anywhere on this ride.
Now that bike would be considered a lightweight in true mountains but is it? The problem of making the differentiation within brands, cc, trail, down country, enduro bikepacking etc is that eventually you run out of parts and have to allocate to the products you think you can sell at the best margin. That leaves fewer options in level where most people be best suited. And the problem is exacerbated with further product ranges, gravel, commuter, road, road racing, beach cruiser etc.
I do not ride on pavement anymore after having been hit twice by cars. I could ride my bike if I chose. Perfect tool? No. But what gains are gained by non racers with all the specialization that are truly needed for a recreational hobby? (Rant over pulls up specialized page to see if prices have dropped on epic expert)