gerund or present participle: investing
expend money with the expectation of achieving a profit or material result by putting it into financial schemes, shares, or property, or by using it to develop a commercial venture.
Terrible article. Everyone knows buying/selling bitcoins is nothing like investing in stock. It's more akin to investing in gold or another commodity like a foreign currency.
Everyone also knows it's 99x less stable. It's easy to manipulate the market. Theft is rampant. Everyone knows these things. But to say you can't invest in bitcoin is silly.
Bitcoin is considered property, or at least the government had plans to consider it so. It's as much property as buying a computer application is. Which take that as you will. It's hard to classify bitcoin because it's such a unique thing. If nothing else it's akin to currency.
I don't condone dropping your life savings on bitcoin but it's a hobby for a lot of people. It's also made quite a few people very rich.