I'm not a big fan of number ten myself; obeying that Commandment would hamstring capitalism completely.
"Coveting" is not the same as desiring.
Covet is unhealthy desire.
Not necessarily so. It is subject to interpretation. You could say that is means "don't be jealous", because jealousy is self-destructive. Jealousy is one of the seven deadly sins!
It could also be interpreted as 'live modestly'. This might undermine rapid economic turnover, but would not undermine capitalism.
It could also be interpreted literally - referring to your neighbors property... with an implication of a sort of "live and let live" ethic. And in that it doesn't have to mean that because you think your neighbor's iPod is really cool that you can't have an iPod too... you just shouldn't want his iPod.