Yeah, I've always been a little sceptical of plans to limit their holdings. I think in some ways they actually worsen the incentives.
If you were limited to GM and Ford, would you want a Tesla or Rivian to exist? If you were limited to K-Mart, would you want Wal-Mart to exist? If you limited to Sears, would you want Lowes, Home Depot, and Best Buy to exist?
Basically any restriction that can be imagined would incentive various other bad behaviors that might actively be anticompetitive.
If you were limited to GM and Ford, would you want a Tesla or Rivian to exist? If you were limited to K-Mart, would you want Wal-Mart to exist? If you limited to Sears, would you want Lowes, Home Depot, and Best Buy to exist?
Basically any restriction that can be imagined would incentive various other bad behaviors that might actively be anticompetitive.