Casual sexism aside, you're kind of close on this. Cord switchers wanted to pay less, and much of the cost of the cable bundle is sports. That said, aside from Philo and one Sling package, all the major live streaming services include a lot of sports, so mission failed?
We are not there yet. As far as linear alternatives to cable/DBS are in their infancy. It doesn't really take much to set one up. A few servers and some wires. TODAY you need to bundle to get ESPN, the Worldwide Leader In Sports, so, of course, all include it. BUT if Disney is really stupid enough to sell it a la carte, it won't take 5 seconds for someone to figure out that there are millions of people who want a sports free, bundle entertainment experience. Those that want ESPN, can add it in. ESPN, if available, outside the bundle, serves no purpose within it. It can be one thing, or the other, but not both.
The same can be said for any genre. Millions would want the bundle, sans the ethnic channels, the religious channels, the children's and teen's channels, the news channels, the _____ wing news channels, the female oriented channels, the male oriented channels, etc.
A la carte means less diversity, because no one thing is popular enough to be made in the first place. Because the bundle protects the consumer.