Bikini Jetpack (Flappy Bird-like game)

So would you rather there be no option for aspiring developers with no large sums of cash to throw at a product they know nothing about? Because that's the deal with every other powerful engine.

The others might have a small trial, but in the end you have to pay upfront or get nothing, and then usually after that the developers of the engine continue to take from any sales you may or may not get. Unity may not be perfect but it's by far the best choice for a team/person with barely any starting funds, whether you like it or not.

Unity has a "pro" version too, you know. And that one still falls under the same complaints I have.

What if a painter were to buy an easel, and that in that purchase, there was an agreement that only certain canvasses could be used with it? What if only certain paintbrushes were allowed? What if the painter was forbidden from learning how it was manufactured, and from having a completely full understanding of how the paintbrush works? What if you could only use the paintbrush in a certain way, and you were intentionally prevented from making any modifications to it to make it function in a way you feel is better?

These are the kinds of problems that arise from the use of proprietary, black-box kits.
Being the nicest-looking or best-feeling shackles shouldn't be a reason to volunteer being placed into them.