The demand for that product still exists, but it's no bigger than it was when Bitcoin started 15 years ago, and it's a tiny fraction of the current overall business. The reason new products aren't slow and expensive to transact like Bitcoin is because... nobody wants that.
You saying the demand for bitcoin is not as much as it was 15 years ago is so false and so funny at the same time. You can clearly see that more people are interested in owning bitcoin now, and countries are becoming open to it. Countries where it was illegal to have are now making it legal to have and trade bitcoin, more countries are making it legal tender, and some are talking about having a bitcoin reserve. More people trust bitcoin today, people who thought bitcoin would be a failure 10 years ago are saying how wrong they were but here you are saying the demand is not as how it was 15 years ago. funny.
When you remove the anti-government aspect of Bitcoin, all you are left with is a product that is slow and expensive.
So wrong again because the majority of the people buying bitcoin don't care about any anti-government whatsoever which is why they're still comfortable using exchanges.
Why don't you at least check for facts before you say things?
Currently, an average of $85 billion in bitcoin is traded a day, how are you saying bitcoin cannot match that?
When you mean digital currency I hope you're not talking about altcoins. Because there's no way the government will allow currency that is not theirs to replace their own.