I don't think so. I think publishers can continue to publish awesome 5e-compatible material that still works with the 2024 D&D books if the playtests are any indication. But we'll see.Agreed, in the sense that the 5.1 SRD will always be useful to creators (just like older SRD's), but I meant to say that it will become obsolete for 3pp's who choose to stick with one-dnd in the future, IF, they release a new restrictive license like with 4e.
The biggest competitor for D&D 2024 is D&D 2014.