Unfettered industrial capitalism is a bubble; regulated industrial capitalism is a sensible way of running an economy. Anything that crosses a moral threshold or unfairly burdens society either gets banned or costed and then the system works.
Anyone who says deregulation is going to "stimulate the economy" needs to be rigorously vetted for each and every regulation they remove (and hey, maybe a few of them do need to be removed, but it's important to know WHY the fence was built before you tear it down...there could be a T-rex on the other side of it!

).
Wealth disparity is the biggest problem that's holding the American economy back. When you tackle that, and working class Americans have spending (and saving) money again, the economy will do a lot better. I'd say the government is incentivised to do this because of the increasing tax revenues they'd get but:
1) Not everyone agrees that this fixes the problem (yeah, it's debatable, but we've tried trickle-down economics and it's failed miserably).
2) Elections cost so much that congresspeople have to spend all their time fundraising instead of educating themselves on the issues (I've seen footage of the call centres...brrr!). And let's not even get into the shortcut of attending a "special lecture" instead of an informational hearing so you can get a large donation. Thus, they're incentivised to fund-raise for their campaigns, not to build their tax base.
And, frankly, Trump has displayed abysmal judgment in not only his public communications, but in policy positions, cabinet appointments (Flynn, DeVos, lol!), and foreign affairs (taking Taiwan's phone call...amateur hour). AT BEST we're going to have the worst presidency in history. At worst, we are looking at the end of democracy and possibly the world as we know it -
but, that's only the worst case scenario (I peg a nuclear war at somewhere less than 2% odds

).
In any case, brace yourselves Americans, you're in four a rough four years...ah hell, who'm I kidding? Enjoy the next 8 years folks!
