Since the release of the original iPhone:
At the end of the day, there will be ups and downs, bubbles and bursts, influences outside of our control, and uncertainty.
A lot of tech companies have come and gone. The ones that stayed had the right mission, the right tech, the right people, the right ideas, and found the right solutions to the right problems. Plenty had their fair share of gains and profits, but only a select few were actually right.