With single family homes in some part of the world costing two by themselves, I think we can give it a little bit more leeway, especially if you're planning to retire and support your kids through college.
Sure, but you could still realize it, even if you are still amassing more money. Nothing stops people from doing so at lower points than 10 million and my point was that if you don't realize it by the time 2 million rolls around you probably never will.
But the point stands.