Ownership of the economy is split roughly 30/30/30 between the top 10%/1%/.1% with the bottom 90% of people making an entrance as the rounding error. If you picture "the owners" by drawing a representative sample of 10 people:

    1 Normal person
    3 Doctors / Lawyers / Engineers ($1M+ net worth)
    3 Successful Entrepreneurs ($10M+ net worth)
    3 Ultrawealthy ($50M+ net worth)

It's worth putting these through the fundamental theorem of capitalism (rich people get paid for being rich in proportion to how rich they are) to solve for passive income from asset appreciation. Plugging in the crude figure of 10%/yr (feel free to bring your own rate):

    1 Normal person 
    3 Professional ($100k+/yr passive)
    3 Successful   ($1M+/yr passive)
    3 Wealthy      ($5M+/yr passive)

You get your incentives where you get your money. Most people get most of their money from working, but the wealthy get most of their money and incentives from the assets they own. In between it's in between.

Are the in-betweeners part of the problem? Sure, but we have a foot on either side of the problem. We could get hype for many of the plausible solutions to aggregate labor oversupply (e.g. shorter workweeks) even if it meant our stocks went down. Not so for 6/10 people in that sample. The core problem is still that the economy is mostly inhabited by people who work for a living but mostly owned by people who own things for a living and all of the good solutions to the problem require rolling that back a little against a backdrop that, absent intervention, stands to accelerate it a lot.

EDIT: one more thing, but it's a big one: the higher ends of the wealth ladder have the enormous privilege of being able to engage in politics for profit rather than charity/obligation. A 10% chance of lobbying into place a policy that changes asset values by 10% is worth $1k to a "Professional", $50k to a "Wealthy", but $8B to Elon Musk. The fact that at increasing net worths politics becomes net profitable and then so net profitable as to allow hiring organizations of people to pursue means the upper edge of the distribution punches above its already-outsized weight in terms of political influence.