Products like this are quite socially and economically valuable, and also require a great deal of capital investment to make work. When the investments demands

Products like this are quite socially and economically valuable, and also require a great deal of capital investment to make work. When the investments demands quick return, then those who have to make it all work seem to start making decisions that end up removing most of that value. So Twitter is quite valuable as infrastructure; but when they try to turn it into a product that they can use to return the investment, it ceases to be infrastructure and becomes less valuable.