The problem is there's really a lot of data out there and it's a lot of work to move it around, e.g. between S3 buckets. There's also a ton of GIS SAAS vendors who are pure rent-seekers: I'm looking at a newer offering charging $23 per month for 10GB storage. This has more utility than their offering in my opinion.
The good thing here is that it could keep data provenance because it's SQL over known datasets.
Here is a video explaining roughly how I work now: https://www.youtube.com/watch?v=JCOhkE0rPWA
There are some much more lucrative niches, that have to do with chain-of-title, rights of way, resource rights, and so on, and I can imagine why anyone would pay to save, say, 20 hours a week.
Power interconnects for datacenter siting would be a hot example.