Nadella, Gates, and Ballmer have all admitted to Microsoft’s mobile mistakes.
The first iPhone didn’t come with those things. There wasn’t even an App Store until a year and a half after it came out. The first gen was pretty much crap. It didn’t have 3g when other phones of the time did. It had the best browser but it was slow as shit. The whole page would turn gray when you scrolled around. There was no copy/paste. You couldn’t sync with Exchange. It was missing basic features that other phones of the time had. It was probably the 3GS or the 4 when it got really good.
WP had a far superior 3rd party YouTube app than any other platform’s first party app at the time. The only reason why they didn’t have a first party was because Google was intentionally throwing road blocks to prevent it from happening.