Bitcoin isn't internet. Internet is something that has no alternative.
Bitcoin share with Internet its decentralized nature.
Moreover, why do you think Internet has no alternative?
Depending on the use you make with Internet, the alternatives could be TVs, Books, Phones, ect.
These can only allow a part of what internet does. TVs, books and phones can't offer a foundation for a usage of digital currency as it is used today. They offer an alternative for a specific usage of internet. With digital currency I mean both fiat and crypto.