* They are usually much more price sensitive and want things as cheap as possible
* The are usually not running businesses (ergo don't have a lot of money)
* They are very used to the free offers like gmail et al., and think since you're charging that you should be better.
* They also are a strong believer in getting justice if people (incl. them) get screwed and will readily post things like this in public fora.
i think the point the parent was trying to make is that there's a couple million redditors - they aren't demographically distinct from anybody. he could have said "the general public" instead.
Grandparent (patio11) has not implied they were. Are you assuming that selling web hosting services for $3 a month must be a satisfactory business model?