Nobody is mentioning video ads. I would gladly consume more video on my phone if there wasn't an adroll.
I can use adblock on my computer, but it's more difficult on the phone (DNS66, etc) so less likely I will have adblocking on the phone.
As publishers moved more to video to capitalize on video plays, so did ads come with them, thus video became less appealing for me.
That's how it played out for me the past 2 years, and probably you too.