It is funny that you don't see the huge difference between Internet and Bitcoin. Internet allowed companies to drastically change the way they earn money (yeah, it took years), and it was so new that there had been no prior similar concept to compete with. The matter is quite different with Bitcoin, since it has to compete with digital fiat money. I for one don't think that Bitcoin is suitable for big companies at all, its decentralized nature plays against it here...
Agreed that this isn't a valid comparison. The internet is an arena for communication, and much superior to what existed previously to share information. It's faster, cheaper and more empowering. Established industries like TV, newspapers, traditional mail, advertising, telephone, libraries, etc. are being replaced by the internet, and the potential to access eyeballs is insane compared to any previous form of telecommunications.
To think that bitcoin is going to come in and destroy FIAT currencies the way the internet is destroying any of the above industries doesn't make sense. It may one day become a viable alternative if enough people choose to use it. Internet on the other hand isn't an alternative, it's the primary method for communication and information.