A tortoise is nit a good image for 25% compounded. Anyway no matter how much we would like it the world does not work that way. Yes, TSLA may outpace the markets. No, we will not have any consistent yearly compounding. Just look at the history since 2012:
Fantasy is delightful. Reality is different. Enthusiastic investors, to be sure. It is wiser to be realistic.
The purposes of forecasting are several. One of them is to help understand the possibilities on the upside. Another is to understand the ‘levers of growth’ so we can recognize risks better.
One thing we old people have learned is that nothing ever turns out as we dream that it would.
As an aside, brilliant investors with long term success rarely beat typical market indices by more than 5% or so over a business cycle. Every recession has optimistic speculators go broke in large numbers. Please avoid imagining that TSLA will be the unique exception to all the rules.
Being prudent and thorough still can yield wonderful long term results. In my life prudence and thoroughness have been the only really difficult things to master. Knowing you’ve done both is usually possible only in retrospect.
My personal choice is to examine every negative regarding a prospective investment. If it still seems good after that I buy and wait. In the TSLA case I waited in agony through Model X, Model 3 and a few near-death situations. It has not been and will not be a smooth ride. The risks are very obvious and serious. There is completion now and much more is coming, even though we try to ridicule all of it. Tesla will do well, we all think it will. Just understand the risks.
I offer a short list of sure things for sustained long term wonder: Kodak, Xerox, Polaroid, Ford, Douglas. That is only the US. Many of them had massive advantages, many kept it up for decades. All ended their reign in slightly different ways.