Why haven't they already?
The need for these small trucks has never gone away. I can't tell you how many old Mazda and Toyota pickups I see still used by landscaping guys and pool cleaners. They don't need a $45,000 Tacoma or $60,000 RAM 1500. They need a bare-bones <$20,000 truck. Which is something that the market has completely abandoned in favor of big 4-door monstrosities with massive feature-creep driving up the prices so that they're simply out of range of those who actually need them.
I was just saying to a friend the other day that if RAM brought the 700 or 1000 to the US they'd SMASH IT because that market is absolutely non-existent here. Well, looks like Ford beat them to it, so instead of having a head start they'll be playing catch-up, but at least they have a platform to do it with.
GM is just brain-dead on the market trends and I don't see them doing anything except turning the Camaro into another crossover and consigning that name to yet another mediocre mid-size or compact crossover too, just like they did with the Blazer and Trailblazer. Despite the later still being sold as a body-on-frame truck in other markets... The only remarkable thing GM's done in like a decade is the C8, and they've botched that at every possible turn. And this coming from a guy with 2 Chevies in his driveway..
If RAM does the sensible thing and brings the RAM 700 and/or 1000 stateside and offers it as a barebones-base 2-door for under $20,000, they'll have a hit. Because no Maverick is going to see the wild in that $20,000 trim unless someone orders it or Ford offers a fleet version. Power-wise, ram the turbo-4 from the Wrangler in it and you'll have a virtually identical platform to the Maverick's optional turbo-4. I don't know about the hybrid - how many Mavs will actually be built at that ultra-base 2wd-only trim with the hybrid? I think Ford's biggest mistake is only offering the base hybrid with 2wd, but we'll see.
This could get interesting. I hope it does. This is a market that has long been overlooked here in the states.