Yeah but that's the thing. If a person on average income in this country is supposedly in the top 1% of earners globally, then the vast majority don't have even one car, one computer, one TV.
So it seems very, very unlikely that it would be possible for everybody to have such things. Even just one in their lifetime, without rocketing global consumption levels.
The idea that if we wasted less, everybody (globally) could share the same Western lifestyle just doesn't seem to add up.
If everybody was to share the same standard of living (globally) it would mean ditching a lot of what we regard as pretty basic luxuries (e.g. your TV).