You could argue that it's more properly a Lightning Internetwork … a network of networks.

That is exactly the discussion we had about the Internet about thirty years ago. It's a network of loosely coupled networks sharing the same protocols.

The Lightning (inter)Network has a gossip protocol and support for finding payment paths along multiple hops of these liquidity channels. It will be interesting to see how the routing infrastructure grows and has to be adapted to handle that growth.

There is nothing in Lightning that's akin to IP address blocks and route aggregation, as far as I know. Some sort of paid route advertising services will probably emerge to keep incentives aligned to user interests.

Perhaps consumers, in significant numbers, are ready embrace the wisdom that "free" (advertiser sponsored and marketing data driven) services are more costly than sats for well defined service offerings.