Yes and no, I'd say.

I don't think he ever does anything because he's been bribed to do it. I don't think his ego could withstand that.

I think he does whatever he does because something about it appeals to his childish nature (often because someone else, like Miller or Vought, has framed it in a way that will, then whispered it in his ear). He certainly does collect bribes whenever possible (and brazenly, though predictably with no response from the media or the corrupt supposed opposition), but I think they're more an effect than a cause - that once he decides on something he wants to do, he looks around for someone who'll pay him to do it.

I really do think that the ultimate driving force behind everything Trump does is his profound mental illness - his delusional narcissism, his grotesque egotism his complete sociopathy and his stunted emotions.

He's effectively a big overgrown toddler, demanding whatever it is that he wants for whatever reason he wants it, then throwing a tantrum if he doesn't get it.

I don't think, inside his own mind, getting rid of wind farms is fundamentally any different from getting a Nobel or building a ballroom or renaming the Gulf of Mexico - they're all just things that he wants a certain way, and the fact that he wants it is, to him, enough. There doesn't have to be any other reason, because in his own delusional, narcissistic, egotistic and childish mind, whatever he wants is axiomatically beautiful and perfect, and anyone who denies it is a nasty person being unfairly mean to him.

Note that none of that is intended as an excuse. I think it all makes him more - not less - of an existential threat. For exactly the reasons I just listed, it's that much more important that he be removed from office as quickly as possible, because there's no limit to the harm he might do.

Conveniently enough, all of that also provides the perfect opportunity to remove him, since he's obviously deeply mentally ill, and therefore unfit for office.

Now if only we had some politicians with some principles and some determination, but both are in vanishingly short supply...