How can you "safely say that it has failed"? Bitcoin is in the top 10 largest assets in the world, just below silver. I think few people would've expected that 15 years ago. That's a pretty high bar you're setting.
The "Asset" is just about speculation and getting rich quick. Again, it failed because there is no real world application in day to day life for transactions to replace the Fiat currency and be de-centralized. You did not address any of my points in earlier comment btw.