Earns nothing. Much less than hosting cost
It's now clear the LN was nothing but a way to gain time. One of the main concerns which led to choose such a complex solution for "scaling" BTC, while artificially preventing the
blockchain from scaling, was giving the banks time to build competing services enough time to work on their own products. Now it's easy to forget that the banks were way way behind
crypto in the first early years. They had to build completely new systems to stay relevant and compete with purely digital money.
