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The early narrative around paying for coffee didn't pan out. But right now it is it's an extremely valuable global settlement system.

There are a dozen different approaches to solving the bandwidth problems. IMHO, it's safe to say one or more will succeed.

Pretty much all of them require to do transactions outside of Bitcoin network and making parts of the system more centralized and more vulnerable.

>But a scam in a sense that it can’t power every day transactions or day to day needs etc

It's not supposed to. No need for a permanent ledger to store cheap day-to-day transactions.