Quote from bozwood:
If AAPL "only" grows at 20%/yr for 10 yrs its mkt cap will be about 1.35 trill. *If* the economy grows at 5%/yr for the next 10 yrs, GDP will be about 22.8 trill. At that point AAPL's mkt cap would be about 5.9% of GDP. Currently the largest mkt cap as a % of GDP is about 2.3%.
I think that argues for overvaluation. It's not easy to grow 20% from the current base for 10 yrs (my definition of long-term in this case).
How does that argue for overvaluation? Your premise appears to be that if something does not grow at 20% per annum for 10 years, then it is overvalued. That seems a rather flawed premise, to say the least.