“In 20 years, there will either be very large transaction volume or no volume” - Satoshi

If Bitcoin cannot meet the world's demand for transactions, Bitcoin has failed.

Notice how I didn't say Bitcoin blockchain?

Blockchain does not scale, like TCP/IP does not scale.

Lightning is part of the solution, it keeps getting better but it's not the only solution.

We should be liberal in acceptance of other approaches to scaling Bitcoin (Postel's Law)