It's not just $300K/yr of W-2 income being discussed; it's that combined with a net worth of $10MM. You could pay cash for that ~$2 million condo and still have $15K/mo to spend after tax. No need to save for retirement (that's what the $8MM is already covering) or college (break off a bit when that time comes).

If that situation feels "minimum viable" to someone, I don't think their primary problem is money-related.