I agree with you, but the obvious answer is that many of their rulings have allowed previously dominant profitable companies to become more profitable and secure, which raises the stock market, which many equate to the economy.
As you point out, this is happening at the expense of innovation and new startup companies that might end up more efficient given the chance to get their feet on the ground.
Where this really hurts the country is that if we continue to give every advantage to the current industries in our country it retards the development of the next decades business,
If it wasn't for Musk starting up a new company with his fortunes, where would the USA be for Electric vehicles.
It would be a different story if more of the wealthy had more of an eye towards improving the quality of life for everyone. I really don't know Musk's true character; however, between Tesla and SpaceX, he is giving US important venues in which to innovate and stay competitive in the global market. He has also greatly accelerated the development of the throughout the entire world. I'd be willing to give him the tax breaks because of what he has done to improve the future and helping hedge against the repercussions of global warming (I think no one really knows how soon and how bad things might get (or not), but switching vehicles to electric sooner rather than later can't hurt)!