I must confess, I didn't believe the $50bn claim. I thought he meant market capitalisation (the total worth of the company) but that's actually $180bn.
Point of order, though. $50bn is the projected revenue for Apple for the year ending September 2010. Revenue for 2008-9 was 'only' $35bn, but that comes with pre-tax profits of $8bn. 22% of revenue going straight to profit is a huge amount, which should make it perfectly clear quite how overpriced Apple's products really are...
Steve gets a halo icon though, because this dig at him comes with admiration at pulling off such a feat.