In today's earnings call, Comcast execs were asked directly about future investment and whether they would continue to build new theme parks. The person asking specifically mentioned the possible park for the UK as an example. They wanted to know if it would continue non-stop after Epic Universe, or if we would get a "spending holiday" from it.
The answer given was that spending would remain elevated with Epic Universe, as well as the already under construction Universal Kids and Horror projects, as we head into 2025. Then spending will decrease. But, if these projects work out and return an investment "we'd be excited in the years to follow—can't predict when—to continue to give the parks & experiences business whatever capital it requires."