I'm sorry to be that guy, but... this isn't unique to the current administration
These kinds of deals are the norm, in fact.
In 2016, both parties raised over $60 million each for their “host committees,” largely from corporate sources. In fact, corporate funding of the conventions has become so routine that the news this election cycle is that some corporations are withholding their support this election. A corporation not financially supporting political conventions is apparently a case of “man bites dog.”
The latest mechanisms for the laundering of public money into the private purse is novel only in so far as the mechanisms - cryptocurrency sales, shell company ownership transfers, presidential announcements as a means of market manipulation for insider trading. More traditional mechanisms - autobiography pre-orders, staff salaries to immediate family, privately financed "junkets" and overseas tours in luxury venues, straight up bags of cash changing hands - have been popular and continue to be commonly employed.
Sanders is right. This is crooked as shit. Just as crooked as when Henry Cuellar and Bob Menendez and Rod Blagojevich got caught with their hands in the till. Trump's out here raising the bar by volume. But he's doing it in a system that condones - seemly encourages - these corrupt practices.
If Democrats do manage to regain power at some point in the near future what are they going to do about this shit? Will they finally throw the book at these crooks? Or will we see a repeat of 2021 and 2009 and 1993?