I agree with this 100% - the world-class, disruptive businesses (the rare compounders) generate unbelievable returns over the long run...
Obviously, the valuation at the time of investment has an impact on shareholder returns (nice to benefit from business growth + valuation expansion), but if a business...
For my part, when evaluating a business, I try and ascertain its revenue/cash flows 5-7 years out (obviously, not a perfect science) and then account for valuation compression...
I appreciate that the above exercise never turns out to be...
IMHO, the future growth of any given company is the single most important factor which determines long-term investment success.