Re: Slow moving
"For me, one of the main attractions of BBC (mostly consumed via iPlayer) is the lack of advertising - I can just dive in and watch a show uninterrupted."
This is why streaming took off in the US. The ad breaks are so infuriatingly long and frequent that switching to streaming was a backlash from the viewers and "no brainer" leading to the phrase "cord cutters". Once it took off there, it was inevitable it would spread even to markets where the advert "problem" was nowhere near as bad, to the detriment of the often reasonably good incumbents.
Here in the UK, we often looked enviously cross the Atlantic at the many TV channels they could choose from. What we didn't see was the ad breaks they suffered and problems having so many channels to fill when there's a finite amount of good content. The rot set in to the BBC and ITV when satellite and cable came to the UK but took a long time to really set in. Yeah, only having two channels, eventually five, to pick from doesn't seem like much, but is there really that much good content on the 300+ channels we have now? Even the higher end documentary channels like Discovery and NatGeo have very little new content, they are 90%+ repeats. Once you've seen all the stuff you want to see, suddenly you find there's not a lot to watch.