Coming up with something would require planning, negotiation, and "horse trading" skills. Trump is not known for any of these skills.
Oh, come on. I think the President is a buffoon but even I still recognize that if he has one legitimate claim to competence in any field is it "negotiation and horse trading." I have no doubt that he is genuinely good at it.
The real problem, as Trump is painfully beginning to discover, is that running a government involves a kind of negotiations that are exponentially more difficult and unsatisfying than business negotiation. Here's why:
In a business negotiation, one of the most vital factors is the fact that (generally speaking) you can always walk away. You're trying to buy Company X or real estate Z and your negotiating partner wants an unreasonable price or unacceptable conditions that there's no breaking the impasse over? Walk away. No deal gets done, but the world keeps spinning on its axis just fine with no real consequences. (Mostly.)
But in government? You don't get a debt ceiling increase passed, you don't get to walk away while the government stops paying its bills and torpedoes the world economy. You don't get an acceptable deal with Iran over its nuclear program, you don't get to walk away and just let them build nukes. You don't get a Middle East peace agreement that you want, you don't get to walk away and remove the US from the region while wholesale slaughter starts. There are real stakes in much of what the government does and no option to just walk away.
So I think that while Trump is undoubtedly good at negotiations, he's having to do them in a completely new environment with a different set of variables and new stakes. And with a 35% or whatever it is approval rating, he doesn't have as much leverage as he's used to. All in all, it's pretty much a perfect recipe for anyone to fail at being a negotiator even if they're otherwise good at it.