I can theoretically really get behind the idea of avoiding the need for a dongle, and I'd love a TV that's usable without one. Personally I'm about 90% there, as the brand I've been using for the past few years is actually quite usable, and my dongle is seeing less and less use.

But practically, it seems like the economic reality means these systems will always be stacked against consumers. Nobody cares enough about an open ecosystem when making the purchase decision if it means a difference of more than a few dollars, so we end up with streaming service logos on the remote, exclusivity deals with a given TV brand etc.