Well, I suspect that there was a bit of both! As a prolific designer, a leader of a large industrial company who survived many serious situations and thrived in a hugely demanding and dangerous political period, he was no doubt a formidable character in his prime. If you look at how the German Third Reich Political gangsters devoured the Junkers company, while Messerschmitt himself maintained a high control of his company, despite the failures, I think you can appreciate how he must have been strong. But, just like Germany could not win the War by ideology, mass murder and strutting around, Messerschmitt could not produce all the aircraft and obtain the suitable engines for many of his wartime designs after 1940.Thanks for the kind words.
I do think it would be difficult to argue against the notion that Willy Messerschmitt deliberately set out to get a promising airframe cancelled for reasons of his own. Had he been fully behind it, and had the Me 262 not been rescued from obscurity when it was by Galland, Milch and even Goering (contrary to what he would say later, Willy Messerschmitt was actually against building it in quantity until the Me 209 II had finally been killed off for good), there could easily have been 309s flying in large numbers by the end of the war.
But if someone was determined enough, they might just be able to push the idea that ultimately the Me 309 died because the RLM didn't turn over enough resources to Messerschmitt and he was forced to concoct an alternative 603/213 vehicle using whatever he had to hand.
In interpretation 1, Messerschmitt is a contriver and a manipulator; in interpretation 2 he is merely a put-upon pragmatist. I can see plenty of people preferring to view him as the latter.
Cheers
Eng