Did you? Or do you just look up terms and hope no one knows what you're saying?
Reagan's ERTA in 1981 didn't raise tax revenue and, despite accompanying expenditure cuts, still managed to grow the deficit.
Trickle-down only works if it assumes that the business will employ more people and that goal isn't maximizing profit margins and shareholder wealth - which usually means optimizing operational efficiency in the form of more automation and overhead reduction (re: people costs).
You're right that at some point, companies will move to somewhere with lower rates. That's a logical move and it's entirely their perogative. But where else would they go? At 11%, the corporate tax rate is still lower than anywhere else in Canada and, last I checked, oil & gas deposits are still here in Alberta. The Province has been under this assumption that people will go elsewhere, that's why royalties have historically been lower than they should be, that's why provincial taxes have historically been lower than they should be. In all fairness, it has had led to some very prosperous times, but it's also led to some embarrassing social gaps. There's no reason why a province with our resources should have to make cuts to essential services and healthcare.