I don't think it needs a war for adoption, and it can exist next to the dollar for a long period of time. When companies realized they can save 3% to Visa, they will start offering it as a payment option giving you discounts for your next purchase, and people will start using it for the discount and then realize that is more convinent
See McDonald's in Lugano, or the biggest grocery company in South Africa. And the lightning network it's just a 3 years old infant. Let it grow 3 more years,.and it will become a superior system. Companies are not going to use horses transportation when they can use trucks.
I see it very similarly to your point - I have very high hopes for the Lightning network, which will certainly revolutionize the banking landscape. To date, we can't even gauge its true potential.
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