The exchanges nodes are the first user case we have and they tend to centralize, only a few have all the traffic, maybe in the future, as you said we could see more real traffic from real business.

nikotsla

lightning

c-otto.de routing node history with a bit of data

C_Otto

To add to this:

ACINQ, bfx-lnd0, bfx-lnd1, okx and kraken didn't make it to the top 10, even though I have/had channels with those peers, too. Size alone isn't enough, there needs to be demand, which Binance seems to have quite a lot of.

I'd say the best reason to run a node in the lightning network, taking into account the risk and all costs, is to actually use it. Businesses that depend on their node, or at least provide a decent benefit to their users by offering LN, don't need to care about the overhead. They earn money using some other means.