Sports in 4K. Why no progress?

Have seen all the complaints of the lack of 4K Sports, even the ones like the English Premier League that Comcast companies (Sky Sports) are producing in native 4K for England and other countries but are not being ported to America by Xfinity. It’s been almost 10 years now since the first 4K TVs were available and now virtually every set is 4K or better. Why is Xfinity dragging its feet on this? NBC Sports 4K (another Comcast company) should be on Xfinity, no need to negotiate anything there. If Xfinity doesn’t get up to speed in the next year, I’ll make it a point to get on the homeowners board and get the contract with Xfinity terminated. I suggest that all of the people out there that are tired of getting the run around do the same. If Xfinity won’t provide what people want then perhaps it time for them to go the way of the dodo.