> The moat of Cal.com is not the code, it's the users who don't want to migrate.
That's a very weak moat unless you have something else like the friction of network dependence similar to a social network.
Sunk cost is sufficient friction for most people even without network dependence.
Exactly, that's why most Saas companies are in a very tough position.
You have to bring value that goes beyond the source code and hosting, otherwise your clients are going to vibe code a custom solution instead of paying you.