I think most of depin lacks sustaining earning for the people who truly participated in the infrastructure, as of know, most of depin got massive amount of people contributing to the network because they incentivizes them with potential airdrop.
but what happen after that? probably the depin will be abandoned and has lesser public participation.

it'd be great if they truly can find some strong use case where demand can follow supply, but so far I'm pretty pessimistic, DePIN as a concept is great, but we'll see whether they truly have place in the market or not in 1-2 year even more so when market shifted bearish.