Bitcoin market cap: $8.3 billion
Uber the taxi app: $18+ billion
Is it just me, or something is wrong with this picture

What exactly would be wrong with that?
Here is a hint:
Market cap is the collectively assigned value of an investment item by all market participants.
To mankind, the value of cryptocurrency should be 10s, 100s, if not 1000s times bigger than a taxi app, not a 46%.
The market participants already assigned the value as you have stated here.
Not what you think both are worth.