Oh, good to hear you don’t feel ‘cheated’ but excuse me all to...

Oh, good to hear you don’t feel ‘cheated’ but excuse me all to hell if I misinterpreted your OP which says ‘Everyonehastherighttofeelannoyed, angry,disappointed’ …

… that is patently untrue … only people who have actually been cheated are entitled to those feelings.
The rest of us are known as ‘adults’ who knowingly choose to spend/invest/gamble our capital here.

But … props to you for showing the 5 year chart which (to me) reflects a totally plausible picture of a successful research/development lifecycle … starting on the smell of an oily rag …attracting capital based on plausible innovation … doling out that capital wisely over years of product development and trials and now - hopefully - attracting further capital from the less risk-averse who need to wait for verifiable results.