Agree 100%. Incremental improvement in existing industries can be a very promising path for adoption, especially in industries that are more open for experimentation like gaming or have pressing problems like slow and inefficient payment settlement (utility bills). Digital content monetisation is also an attractive space for experimentation. Podcasts, music, streaming. We already have good examples of how lightning projects there improve economics of the participants in those markets. Cross-border settlment and P2P economies based on microtransactions are also potentially good areas to apply lightning.
Founders that come from such industries can have great insights about how to penetrate them.