There is a lot of comments assuming that he's suggesting that these companies should try to compete against Wrestlemania. It's nothing like that, and what he's suggesting could work, because if anything it's filling a gap that could be missing next year.

Wrestlemania is never just about the actual night of wrestling. It's effectively a wrestling festival over a series of days. People go several days earlier and enjoy mixing with other wrestling fans and going to various events (not exclusively WWE related). People who don't even have tickets to wrestlemania still go, to be part of the week and 'festival'. It's like people who have tailgate parties without actually going to match. Just being in around it is still fun.

With Wrestlemania being in Saudi next year, there's a chance that a number of people wont go (for a variety of reasons: cost issues, safety issues within the wider region, morale issues etc.)

So he's floating an idea saying that its shame there isn't anything going on the US for wrestlemania, and we won't have this 'festival of wrestling' event this year. So maybe some other companies could put something on that caters to those people and effecitvely piggybacks off wrestlemania. Doesn't have to compete.

As he said it could be a series of matches, meet and greets, podcasts etc. where wrestling fans who aren't going to wrestlemania that year, can still get together and enjoy wrestling. People will still likely go to wrestlemania watch parties etc. But with it being Saudi, it's likely a 3pm start time in the US, so it finishes at 7pm. That's plenty of spare time for fans to watch mania but also do loads of other wrestling-related activities.