Well in several years as the block subsidy drops each halveing. Most of miner revenue is likely going to come from bitcoin transactions fees. So as long as people are using bitcoin and fees go to miners to secure the network I don’t care what they use their BTC for.

There’s an elephant in the room many in the space ignore. ETH is deflationary and supply shrinks as transaction fees increase due to the fee burning mechanism.

Why I am talking about a PoS centralised shitcoin?

If bitcoin doesn’t build out applications with large number users then it’s possible for a shitcoin like eth with many layer 2 scaling solutions and deflationary monetary supply to flip bitcoin just by network effects and Wall Street deciding they like eth more.

Okay let’s go with your idea and use tap ass, and spider chain. Firstly, tap ass suffers the same problems as lightning users dependant on centralised Liquidity Service Providers (new banks) to perform successful transactions. Secondly, spider chain has no code made public yet. It admits it’s that you have trust members to release your bitcoin when you wish to return back to (13000 blocks) mainchain.

The whole point of drivechain soft fork is so it takes 3-6 months to withdraw your btc to mainchain. It takes 51% miners to steal over 3-6 months the sidechain funds. The chances of this statistically very low as it’s fully transparent. Making it basically trustless.