Yes. To put it in startup terms, SiaCoin has an MVP and is post Series-A but is still building out the product.
Storj, which is in the same space, is a couple year ahead and is just starting to try and get traction (but had a management shake up)
The most serious alt coins are very much like startups.
Factom, which is sort of a digital notary service, seems to have been working for several years on their platform and only just recently picked a market- Mortgages- Claiming they want to prevent the problems that happened in 2009 by making auditing and verifying mortgage documents better. They closed their Series A last year, but did their ICO a couple years before that.
