Exactly. Well put. The model that isn't sustainable is a permanently investor funded one. Often when these products launch - they have zero advertising, zero

Exactly. Well put. The model that isn't sustainable is a permanently investor funded one. Often when these products launch - they have zero advertising, zero features to make money - they are totally aimed at growing market share - totally focused on the user. Then it's inevitably downhill from there - whether it's people not being prepared to pay ( eg Blue ticks ) or complaining about advertising or scrapping of data. One of the damaging effects of the large amount of investor funded products is that it makes it very difficult for the user supported ( paid ) ones to thrive. Perhaps the current state is because we are not at equilibrium - and as regulation, and the market matures it will become a bit more sane.