By most accounts, PG's definition is the accepted definition within SV, so it's important to understand that most (99%?) VCs are looking at companies growing at breakneck speed.
Lifestyle businesses, or companies not looking to grow very fast don't need VC money, so I really don't understand everyone's obsession with making "VC sustainable".
If you want to start a business and require initial capital then take out a bank loan. It's relatively simple. But...that's not a startup, again, by most accounts. If you want to use some random definition found on the internet go for it, but that's not status quo.