[pmlnr]

> what they believe is in-demand and will be well-received by consumers

They never show an actually alternative version. A/B or bandit testing doesn't cover a comparison between, say, a nicely designed, very fast, non-tracking, but less interactive version, or a slow, but full-fledged "app".

There used to be mobile versions accessible from desktop (twitter, facebook, etc), but not any more without faking the user agent. Those are significantly lighter, than desktop versions, but there is no way to actually compare the two for the generic public, and companies don't seem to be brave enough to really dig into these questions.

This is the comparison I miss.

Hence my wording: assumption.