A cheap cash bubble that popped a while back, not confined to tech. Reddit and Twitter (and almost all social media) don't provide a service valuable enough to

A cheap cash bubble that popped a while back, not confined to tech. Reddit and Twitter (and almost all social media) don't provide a service valuable enough to get users to pay, so they rely on advertising. Uber does provide a service but prices it below cost to gain market share -- a strategy Amazon followed until they succeeded, but one which Uber probably won't. You can find plenty of analysis and opinions about the affects of cheap cash and the growth-at-all-cost tech bubble questions, the topic gets hammered to death.