I think in this instance it means not accepting venture capital, which gives them greater flexibility to travel.
A startup's main aim is growth. Most VCs won't accept an idea that doesn't have the potential to be worth a billion dollars. One amazing investment must have a 10x return to pay for the 9 shitty investments that failed.
A lifestyle business' aim isn't growth. It's aim is to provide enough money and use a small amount of the founder's time, so the founder can enjoy their life.