Depends what you consider as "Apple being successful". Clone market was peanuts to Apple financially, initially $50 a license. Now they sell you $500 of PC parts jammed into their machines for $1200 (minimum, base model iMac).
I'd love to know where we buy these $500 non-Apple iMacs. The closest competitor to Apple's iMac would be probably the Sony L-series all-in-ones which start at $1400 when configured to a similar spec to the base iMac, but with a plastic case rather than the all-aluminium chassis of the iMac.
