You don't know anyone that uses Firefox for its wider selection of extensions, more customizable UI, and better privacy (separate search bar and URL bar) features?

> wider selection of extensions, more customizable UI

Nope. Most people don't care about that or in fact prefer Chrome's non-customizable UI.

> and better privacy (separate search bar and URL bar, keystrokes not sent to Google as "partial searches" by default)?

That's what I meant with "Mozilla Foundation's values".

Usually when "supporting a company's values" is given as the primary explanation for choosing one product over another it implies that the customer does not gain or is in fact sacrificing some direct benefit because of a factor that not related to the utility of a product relative to its competition.

Increased privacy is very much a direct benefit for a user and it is a real factor that contributes to the utility of FF.

Which adding DRM detracts from.

You're reading too much between the lines.

That's weird. I know a fairly even proportion of users of each, but people who are power users or close are overall more clustered around firefox, to be fair.

That's mostly the case for me too, but not exclusively. As it is, I'd guess Firefox is maybe at most 10-20% power users who are likely to understand privacy issues etc.

You are biased.