Workers don’t give a shit about customers because that’s how the incentive system is set up. Give workers the profits, you give them a good reason to give a shit about how clients feel.
That would be an improvement actually, because the customers of these companies are not users, they are other companies looking to advertise or buy users personal data. The users of for profit social media are in fact the product, not the customers.
You skipped over the part where he says "You think I own this business? You think I own IKEA?" implying he would care if he actually had any skin in the game which he would if his job operated as a worker co-op.
Co-ops can be capitalistic and are capable of functioning under capitalism, but they would also work much the same under any market economy. Decisions and would be profits are democratized/socialized.