Left-leaning political ideology implies regulation?
What about https://en.wikipedia.org/wiki/Anarcho-capitalism
A more convincing argument for me would detail the regulatory frameworks that lead to economic stagnation, not bucketing a whole continent in an attempt to correlate a glut of regulation with economic stagnation.
So the UK with 14 years of right wing rule should be humming, but it isn't. Now you're going to claim that "oh, the Tories weren't right wing enough". Nonsense.
Then I'll point out that 12 of the last 16 years in America have been under left wing governments. All filled with policies that a right winger like yourself would no doubt abhor. TARP, Obamacare, CHIPS Act, Inflation Reduction Act - massively left wing. State subsidies handed out left and right, and the American economy grew massively during that time. "Oh, Obama and Biden are actually right wing by European standards". Sure buddy.
Your simplistic world view leads to wrong conclusions, which you'll try to No-True-Scotsman your way out of. None of us are buying it though.
Your worship of right wing ideology saddles you with a crackpot who fires nuclear safety personnel and then attempts to hire them back 2 days later. Spare us the lecture.
They've had left leaning governments for too long, and economic stagnation is the natural result of that. You can't regulate your way to prosperity.