There's not name as perfect as "Bitcoin". Easy to remember and straight to the point.
Also very meaningful. It means "coin made by bits", it gets the idea of a very digital coin, the coin of the Internet.
No other cryptocoin has such a meaningful name... take Ethereum for example: what does this name mean? How can it be related to digital economy and online transactions?
Don't know about ethereum but it has alot more complex network. We are talking about cryptocurrency only meant for transactions, compared to a cryptocurrency/platform which can be used for alot of things. I think that Ethereum is alot more revolutionary rather than bitcoin because you can actually make usable development systems on it instead of just sending bitcoin.
fun fact: the original bitcoin software was not only meant for transactions. there was actually a poker client built into the software that was later removed.
i actually think the functionality of the blockchain conflicts with this idea that bitcoin is only for transactions. the transactions themselves are data propagated and stored on the most secure network in the world. that's perpetual storage for hashed/encrypted/compressed data, and it's still pretty cheap considering how low fees still are.
bitcoin will eventually allow more complex transactions like smart contracts. "simplicity" the smart contract coding language has been released, and rootstock (RSK) doesn't even require a fork to go into production. things just take a lot longer with bitcoin, because we don't "move fast and break things." that's what the ethereum guys do.