There's always management. That's my plan when I'm in my 40s/50s/tired of coding age, at least.

Otherwise, don't worry about it, because there's lots of people out there right now jumping around companies from year-to-year, doing that thing. It's the norm for an industry, right now.

There will be some conventional wisdom you can glean from colleagues, The Market, and your own heart/personal development, when the comes time for that.

You're young. You don't need all of the answers now, nor should you try to come up with them which would inevitably cause you madness.

Plus, there will always be the Googles/Apples/Microsofts, etc of the world. When you're ready for stability, move towards that pack.