I don't think that most people are going to buy their shares to await 14 years just to return the investments. Obviously, these shares are bought with the purpose of speculating in expectation that their price will rise further and they can be sold for a profit.
14 years isnt a long time to wait to get all your money back and on top still own all the assets of the company. The speculation part exists in those 14 years, will profits continue for that time and if so its a valid investment at least breaking even.
Many think the market is driven by flashy traders but its all centered around long term investors. This is eventually what brings down markets, such as the sub prime debt setup that was fine for a while. So we disagree, I think people own Apple to gain a share of the valid company profits. They made a perfectly reasonable business last year, profited and shared that gain with investors.
It is a brand name in a varied market but so is Coke and they done fine for decades because they held onto something unique and that flavour is valued by enough people they can charge a quite large premium over water and sugar and thats all it is. Apple is simple and yet also a valid profit in a similar way.
My argument for bitcoin is always it has to be easy to use, its using clever tech and modern communications but it must layer that to give masses of people a 1 click solution. If bitcoin cant do it, others will. Capitalism is always about comparison and competition, Im calling Apple valid business for the moment and even though I prefer PC I know many users value it. Most of the share price reflects normal business expectations and probability. When optimism is too extreme and not even based on current results, I agree its speculative and unstable; this exists but Apple isnt most guilty or even (most) big Oil AFAIK.
Some accuse Bitcoin of being all speculation, it has a use too though. Oil price is speculative as we know there are giant reserves but utility requirement for it is there also, I would argue world growth requires oil or very large development in energy alternatives, currently too slow
[14 years roughly equates to 5% interest compound in comparison to a normal savings account. Then we can compare that to debt such US treasuries which are grossly overvalued and this shows in their rate of return of 2.3% and thats after it rose alot. The figure for apple excludes the dividend they also pay. The extreme contrast was early 80's USA debt at 16% yield, low mark for valuations with much fear and low speculation at least in treasuries - today we are at high point]