We have rules and regulations, whether that causes unreasonable delays in permits or construction I don't know, but you can't just start building a factory where and when you want.
For sure in some cases you see projects under construction 24/7, but it's rare, mostly because workers in the EU are compensated appropriately for unsocial hours - 2x, 3x pay, with time-off in lieu on top of that. This isn't red-tape, feet-dragging or political mud, it's normal in western society.
I'd also hasten to add that several EU countries have made a pitch to Tesla with proposed sites, no doubt with some sweetenersunder the table, but Tesla didn't, to the best of our knowledge, bite yet.