But as I like to keep an open mind about new tech, I always wonder if something like this could have been said about the early days of Linux:

1) Open-source is pure unadulterated theft of other peoples' work. This model cannot ever be allowed to become significant in the software economy.

2) That people who are into open source have naive ideas about how economy and society works.

3) That the main users of Linux are into other shady activities like hacking (the bad kind) and ripping other people's work.

The main reason I think the analogy doesn't hold that well is that we are now a decade into crypto with few signs of adaptability, while within a much shorter duration you could say that Linux was already showing signs that it was going to lead to a paradigm shift in the software industry.

Having just typed this I realise that one can argue that within a decade the market valuation of bitcoin (whatever that means) reached $200B which is a spectacular achievement, and one can argue that that is its way of showing that it will be a paradigm shift of something in finance.