Anyone remember Amazon? The cream always rises to the top.

Do you really think BTC has gone without any kind of further development or innovation since 2008?

Amazon will not stay there forever. Remember IBM and McDonalds?
Sure BTC got under developement, but in my opinion its inherent technological design is broken, if you want it to use as an actual currency.
And that's the argument of many "believers". Current attemps in improving scalability comes at the cost of loosing security, let alone the sheer amount of electricity needed for buying a coffee.
It's "inherent technological design" is the blockchain. So the blockchain is "revolutionary technology" but it's broken? You are contradicting yourself. Unfortunately, most of these cryptocurrencies we have now are based on the blockchain concept, and have the same flaws.
There probably is a better way. Now we need another genius to come along and show us the better way. Just like Einstein had a better theory of gravity than Newton.