“Startup” doesn’t equate endless growth and competition. Building a (merely) sustainable business is a worthy goal and quite good enough. Most startups never even reach that modest goal.

What you described is what's called a 'lifestyle business', not a startup.

See eg http://www.paulgraham.com/growth.html and https://www.ycombinator.com/library/En-what-is-a-startup

This is a website that discusses more than just "startup news", so perhaps not