Perhaps a simple project doesn't actually need blockchain.
If we are talking about selling any kind of products, you would be able to use blockchain to track the production and selling of products. For example, recently in the news I read about a Scottish distillery that uses blockchain to allow the customer to track the entire history and production process of expensive whiskey, from production to delivery.
Because this is a new technology, I think we are likely to see larger organizations implementing it first. I think it’s more likely that small and medium-sized enterprises will look to piggyback off larger projects, or existing blockchains, rather than try to do something new independently.
Garrick Hileman and Michel Rauchs released the 2017 Global Blockchain Benchmarking Study, which can be downloaded as a PDF here: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3040224.
You can read the brief summary of their study here: https://insight.jbs.cam.ac.uk/2017/central-banks-are-trialling-blockchain/
The above interview was conducted on 12 December, 2017.