The problem with bitcoin is that it is purely virtual entity. It is hard to estimate assets cap of all bitcoin projects and startups.
Some say it is over 3 billion dollars market, but bitcoin companies are 'weak' they do not produce anything, they do not supply people with ideas.
They are so far only payment processor companies, wallets and financial institutions (exchanges).
Well then what is Blockstream? There are advancements of the technology happening all the time trying to improve it, Blockstream is a clear example, im sure there are more stuff happening out there, but a lot of people seems to be fighting to become the PayPal of bitcoin. I hope they all go bankrupt, Bitpay seems like it's already headed to fail. Good riddance.