A browser that accepts payments that only a tiny fraction of users know how to use or trust (bitcoin)...for a very technical subset of the market (demographic), for which this problem doesn't really exist. Outlook not great.
Its an experiment. This may fail, but bits and pieces of it will be built into future solutions.
Until they make a serious attempt at it, how will they know what holds back adoption or what problems they will encounter?
Well, it's clear that bitcoin based ones, wont.
If you miss a target it doesn't mean you learn how to make the target better.
The problem is that bitcoin as a micropayment solution sucks.