Content is that wouldnt cause a surfer to cancell/chargeback their membership?

I know ive seen members areas with maybe 50 photo sets in them and 2 videos.

Im just wondering if there is an absolute minimum amount of content that wouldnt cause the member to either cancel or chargeback and, if there was a minimum amount, do you think the site could still turn a profit?

Your thoughts?

Regards,

Lee