In the case of the internet in the early 90's, there weren't really any alternatives to send email, browse the web, etc. For cryptocurrencies we have a super competitive market with hundreds of alternatives (even though most are probably not very good). Bitcoin is still decently far ahead, but it's development and decision making is super slow and conflicts with what's good for the market. If an altcoin with a solid development team gains a strong enough foothold (and they are getting close) I'm not sure if Bitcoin will be able to recover.