Capitalism = the system where the ownership of the capital is by private persons. (as defined by the dictionary)
Is there a systemic problem that your auto dealership is not owned by government? May be the problem is that you can't open a new one, because of zoning laws or minimum wage or something else? No markets are free, but only in countries where markets have some degree of freedom you can have the abundance (and corresponding waste of the system).
Check all centralized systems of resource allocation - from socialism, highly centralized authoritarianism, theocratic monarchies or very large companies. No competition = more waste.
Any owner of a small business understands that there is no "flaw in capitalism" itself, because you can't force your clients to buy from you. You can only do that if you have cornered the market. You can't corner the market if you play by the free market rules. But if you need a "licence", "certificate" or other non-market tool to sell your goods to the customer this is the way to kill your competition.
Varoufakis has been wrong soo many times since Greece default that it's not even worth mentioning all his predictions.