On: Ask HN: How come there is no example code for B2B-SaaS apps?

[ozim]

This leads to answer, which is: just start building, whatever option you will choose you will run into gotchas.

So no point of overthinking it.

[slashdev → ozim]

That there are tradeoffs with each option does not mean all options are equal at all.

Doing a little research first, and thinking about which tradeoffs matter most in your particular case could save you a lot of effort rewriting things down the road.