The challenge with levered long bets on technology is that most foundational technologies undergo waves of innovation, growth, replacement, and bankruptcy. You could've been totally right about social networking by betting on Xanga in 1999, and still gone bankrupt because they were long gone by the time Facebook ultimately won the market. Same with betting on Altavista for Search in 1995, WebVan for e-commerce in 1999, BlackBerry for smartphones in 2002, etc.
If you're looking to make a levered long-term bet on technology, often the smartest thing is to bet your career on it. The skills you personally hold will survive multiple generations of companies, and then you can seek out whoever happens to be hiring at a given point in time for the technology that you think will be huge.