https://markets.businessinsider.com/news/stocks/big-short-in...
In 1997 a friend who worked at Cisco told me to go all out on Iomega. He also advised me to invest in some 3D storage startup which well went nowhere. No matter how smart you are you just have to play percentages.
Even better consider the case of Cisco itself. It reached market cap of 500B around 2000 and despite being a solid company has not performed too well.
Thus it is quite conceivable that the inevitable market correction will bring the high flyers down.
That is Apple will still be extremely strong, Google might suffer a bit because of dropping ad spend.
Companies such as Shopify, Tesla will actually need to reach reasonable P/E ratios, not the insane ones now.
