I've been there when first EU deployments of iPhones (3G) happened. The only more closed ecosystem was that of cheap value phones that didn't even have J2ME, and that one was still more free on few axes.
It took at least two generations of apple products IIRC to shed american closed ecosystem approach which was rightly seen as total shit - but that knowledge didn't percolate much outside the very small group that had iPhones or worked in telecom high enough to know details of how sausage was made.
There are many things to talk about what Apple did differently, but "open" was not it. Arguably the bigger issue was how due to how Microsoft and Nokia dropped the ball on system software (which resulted in certain lock-step issues with hw), allowing reasonably cheap chance for Apple to appear as huge jump (arguably, UX-wise it was big change, but being used to smartphones I found early iPhone very, very clumsy)