I haven't either. Yes, it's one thing when somebody claims to be doing something good but actually mostly doesn't, or just claims to be something people like, but then just uses that claim to sell his merchandise and is ready to change his image to something else if it starts to look like that might sell better, but when it is somebody who actually IS doing something useful - well, you can't live from good deeds only, and actually doing those good deeds does usually also need money and you have to get that from somewhere.

In case of Trump for starters getting enough votes to get elected needed for him to make sure enough people knew he was running and knew what he was planning to do so they could then decide they wanted him as the president enough so that they then went and voted for him. And all that took money. A lot of money. Those rallies, and everything else, weren't cheap. Just for him to travel to and from them presumably cost quite a bit more than most people, even well off people, earn in a year. And even if he is pretty damn rich even he would presumably start to run out of money if he just used what he has and didn't try to raise more by whatever means he has.

So why not get at least some of that money back by selling products people are not only willing to buy but actually want to buy?