While I am excited to see this alternative open rules system created on an open, perpetual, and IRREVOCABLE license, if it isn't really good, it will just end up fracturing the community a lot.

All in all, WotC started to gamble with D&D, and they should have never done that. It's going to be bad for them and bad for the players

But if a central system comes along with a ruleset the players and GMs like more: the inverse will happen, the content from WotC will be run in a different system. WotC will see the purchase of all the player handbooks and such drop off.

I would very much welcome an alternative rules system too. For one main reason: D&D rules books are terribly written.

I don't mean linguistically or the content isn't interesting, but as a "rules book", they suck .
...

Gamers will quickly learn another TTRPG system once there is a good amount of high quality content for it. If it all centralizes on one system and open world/multiverse, I think the players will move quickly to dealing with two different gaming systems.

The ability of a GM to homebrew modifications means they will be able to use any content still. I'm sure at first there will be plenty of people using the D&D system to play content from other creators.

I should clarify. Am I saying that this is the end of D&D? No. Of course not. WotC will always want to capitalize on it's intellectual property. They will continue to put out whatever they can to make money on the product.

What it does mean is that all the 3rd party content is going to leave D&D and never return. These 3rd party creators are already discussing creating their own open gaming system.

I get that WotC is trying to find a way to make more money off D&D. They have said this publicly in the past. But this has been a major mistake.

I see there being precisely 1 way for them to save things now, coming up with some way to make the OGL 1 irrevocable. Anything less has basically sealed their fate.