Yeah, I wondered the same thing. But it was going be a lot longer than that before any new ownership groups were admitted/checks were written anyway. They were merely going to be accepting presentations at the 2021 meetings, and now that has been delayed a year. After that, they will still be using the various markets as leverage to get Tampa and Oakland settled in too. And then the stadiums have to be be built too.
I doubt the pandemic affects the fee MLB can charge - or the media value - either way.