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It's a fair point to bring up, although the network effect will center around a particular network eventually and then updates will be the way to go for the absolute most part.

Whether such updates should improve coin transactions themselves, or if they should improve specifically the off-chain capabilities is probably gonna be well tested in the market place coming years.

It's easy to forget how revolutionary the blockchain itself still is and think that just building a second layer on top of it will easily scale that capability. So far we can see that it doesn't. But that also doesn't mean that it never will of course, or that it can't have particular use cases.