Comcast is going to be in a much better position, when things begin to open back up.
Could they hurt a bit? Absolutely--but Comcast has a monopoly on Cable television, internet, and phone domestically and in some cases, internationally. The parks and the studios may drag them slightly--but it isn't going to hurt them as bad as Disney is getting hurt by.
And even if they didn't touch SeaWorld for a bit, with the only exceptions being the removal of animals..they could then eventually close the park and give it the revamp it'd deserve.