There's a key difference between Disney's remakes and Blobbo's ideas. Disney is producing cheap, soulless knockoffs of their existing properties, but they at least manage a pastiche of familiarity with the concept. You're not going to get a very different story from the original. It's played safe to a fault, but it works well enough because of that. When parents want to take their kids to the movies, they know that a Disney remake is going to be a safe bet, and it'll tick their own nostalgia boxes from watching these movies when they were younger. It doesn't hurt that there really don't seem to be a whole lot of kids' movies released in theaters these days, so Disney has more or less cornered the market, to the tune of a hefty pile of cash with every remake.
Bobby, on the other hand, seems to believe that the correct way to remake any franchise is to subvert expectations a la Rian Johnson, which for him generally means "come up with the dumbest way to flip a story around and then praise yourself for being so smart to think it up." His ideas are often built on spite towards existing fans of a series or people he hates ("Terminator except the bad guy is the mayonnaise ghouls"), or they come from a place of sheer insanity ("Care Bears but it's Paradise Lost"). And that's when he's not ripping off material that he's already seen before, such as the "Hot Wheels movie but they're shrunken cars" that is literally pulled from Ant-Man and the Wasp. Top it off with his insistent claim that each one of his exceptional ideas is a "billion-dollar franchise," and you've got yourself a standard MovieBob film idea.
Disney's remakes are bland and safe. Robert's hot takes are actively antagonistic or incomprehensible. Even if he had any sort of clout to be noticed, nobody would hire him for any of his garbage concepts.