Hey, I'm the author. Actually, the data doesn't support this statement. Here's financing by year for BTC companies in $M (non inflation adj). Note 2015 is only through June, so BTC investment should grow 45% y/y, if the pace holds.
year industry amount($M)
2012 Bitcoin 4.75000
2013 Bitcoin 54.47459
2014 Bitcoin 259.57000
2015 Bitcoin 189.40000
year industry amount($M) 2012 Bitcoin 4.75000 2013 Bitcoin 54.47459 2014 Bitcoin 259.57000 2015 Bitcoin 189.40000