The first 3 films were pieces of art, these movies are tools wielded by corporate entities to make money for their corporation.
See, here is the thing, you could argue this about the first film I guess, but it was actually just a ripoff of Flash Gordon in the end. You cannot argue this about Empire and ROTJ. Empire only got made because of how much money Star Wars made, it was literally created because of money.
And don't even get me started on ROTJ. Ewoks anyone?
Hollywood has been about making money for a very very long time, it's your naivety that is preventing you from realizing this.