well a good start is betting on the most popular framework in the most popular language and building the production ready stuff that is missing that the framework authors constitutionally cannot compete with you on :)
there are better wedges financially speaking but theres pretty much no bigger bottom up developer wedge than this one
Vercel (then called Zeit) developed NextJS themselves. I believe swyx meant React when he said "framework", even though one can argue that's technically incorrect it's been commonplace for some time to call it a framework.
there are better wedges financially speaking but theres pretty much no bigger bottom up developer wedge than this one