I've learned a lot!! Probably the biggest one is that the "inbound liquidity problem" isn't actually about liquidity being scarce. It's about how the network is communicating.

If liquidity was scarce, we'd see the yields from routing nodes explode higher. Instead, anyone that wants to get some inbound liquidity can quickly find someone that's selling it and buy a channel from them. With the network being so decentralized, the biggest needs are actually in coordination and communication.