A moat is the trench around the outside of a castle that is often, but not always filled with water. It's a defensive structure because people have to cross it to get your castle in the middle. So Uber's castle (i.e. it's product) doesn't seem to be that well defended against competitors (it has a weak moat). They have the numbers and the user adoption, but fundamentally they're no different from Lyft et al.

That's my interpretation anyway! I've never heard 'weak moat' used in this context before though. Apologies if you actually know what a moat is and that all sounded rather patronising :/

> A moat is the trench around the outside of a castle that is often, but not always filled with s/water/alligators/.

Joking aside, that's a great way to describe the do-hard-things concept. I think the gp was more asking if that was a metaphor derived from some pg (or whoever) blog post.

It's a fairly common term to describe barrier to entry dynamics. See for example a random article like this https://stratechery.com/2015/selling-feelings/

I tend to hear the term "Rust on" (as in metal rusting). So the more rusted on you are the harder it is to get you off. The more integration you have across the board, the more rusted on you are and people can't be bothered trying to clean the rust off.

warren buffet