Is Elon Musk a very dedicated, smart and successful entrepreneur? Absolutely. Denying this is just plain stupid and anyone that says otherwise, like most people in this thread, envies him because they know they will never reach that level. It's human psychology, we hate it and don't accept it when other people are better than us. 99.99% of all the 5B+ adults in the world will never do in 10 lifetimes what he has done in 2 decades.
BUT, and this is a big but, has he revolutionized anything? NO, not even close, please don't make me laugh. Electric cars are NOT revolutionary - fundamentally it's the SAME tech. Instead of taking the oil and putting it directly in the car, you process it to produce electricity and then power the car with that. He didn't do this to help the planet (big LOL) - how could he when oil (fossil fuels in general) is still very much needed to produce electricity? I cannot understand how people are so stupid to think that electric cars will help the planet, when fundamentally they still rely on fossil fuels.
He also didn't invent car batteries, they were invented a long time ago, at least 3-4 decades ago, but back then, it wasn't the right time to put them to use. What he did is take the tech, make it a bit better and put it to practice. Again, this is no small feet, so kudos for that. But he didn't revolutionize shit when it comes to batteries. Energy storage is a HUGE problem in our world and there are thousands of scientists & companies working on that to make it economically feasible. Musk doesn't even crack the top 100 when it comes to energy storage tech.
What he did however is use the hype of "helping the planet", his fame & his infinite marketing budget (which comes from investors anyway) to gain a foothold in the car industry. The car industry is dominated by a few players only, so competing there is extremely difficult. You don't just build a new car brand and release it in the market like you would do with a physical or digital product. The capital required is in billions of dollars, and no investor would give you that kind of cash just like that - You need an edge, something that the competition doesn't do at the moment to jumpstart the ship. He used the environmental crisis to gain that edge, hype up the stock, so he could receive funding. Don't get me wrong, that's really smart thinking, but it's definitely NOT revolutionary.
And let's not talk about SpaceX. Blue Origins, Bezo's company, actually has achieved more in that area than SpaceX, but you don't hear about that much in the news. So has NASA. Reusable rockets were invented in the 70-s during the peak of the Space race between USSR and US, but again, they were not economically feasible back then, because the world was much "poorer" as compared to now. Today, with trillions of dollars floating around, it is feasible, which is why they are becoming a reality. But again, 99% of the tech was developed decades ago by DARPA or NASA to be used exclusively for the military. That also includes phones, touch screens, the internet and practically every other tech we use today commercially. If you want to call someone revolutionary, call those scientists at DARPA. They revolutionize tech so then entrepreneurs can put that tech to use commercially and make it available to the public decades later.