Bill did have a wealthy parent but didn't really leverage that in the early days. Anyway Steve Jobs and Steve Wozniak founded Apple from a garage, but I notice you ignored my mention of them for the purposes of your response. Elon Musk stated with pretty much nothing, and has talked about how he lived off a dollar a day when he founded Zip2.
If you go looking for people from wealthy backgrounds you'll find them, although you actually failed even at that, but they aren't the only kind. As another example Zuckerberg and Saverin founded TheFacebook.com with $2,000 scraped together while they were students. Google was also founded out of a garage.
Anyway, what's wrong with people with money using it productively to found successful companies, and employ people and provide valuable services? Surely that's a good thing? It seems to have worked well for China over the last 30 years, certainly compared to the previous 30.