Furthermore, one way to avoid ending up in a feature for feature fight to the death with a bigger player is to think instead in terms of “job to be done”: https://hbr.org/2016/09/know-your-customers-jobs-to-be-done
By planning what you work on by focusing on what the customer is trying to achieve you’ll do yourself a favour when it comes to marketing as you’ll be able to speak in terms they understand.
Lastly, as you’ll see in the positioning book above, it’s not wise to completely avoid competitor analysis despite how unpleasant and draining it can sometimes be. A potential customer needs to understand why they would choose you over the incumbent. You need to know that answer before they can.
You can make a moat around your product, but that is different. You still have a core value proposition that solves their real world problem and there will be other people solving it too.
Most companies build moats through contractual lock in, trust and size, or simply buying their competitors. I have yet to see a feature only moat.
This is a feature that no other company could have built. Every single one of Supreme's competitors could have known that Supreme would be releasing the brick and the information would be utterly useless to them because only Supreme could have released the Supreme brick.
On the one end you have Supreme and the other you have pure commodities and It's up to you to figure out where you'd like to be along that spectrum.
Features that induce a significant network effect can potentially lead to a moat. No contracts necessary.
(Maybe this is what you meant when you mentioned "size" as a moat-building mechanism.)
www.investopedia.com/terms/c/commodity.asp
For example, take a Toyota Prius. Most people would not think of that as a commodity. It also is not a monopoly. If Toyota Prius where a software tech startup, they would be bemoaning the fact that they have become a "commodity" (read: it's become a competitive market where consumers have choice between differentiated goods).
If you can't position, then you become a commodity and you're competing purely on price.