> Somebody investing $1,000 in Apple who only has $1,000 to invest is the same as somebody investing 10M who has 10M to invest.
It's really not. You can't really meaningfully diversify with a portfolio of $1k, but you sure can with $10M.
It makes more sense for the $1k investor to pick one stock they feel good about it and hope to get 10-20% or more return on that, rather than for that $1k investor to try to find ten funds / stocks that balance his exposure.
For the $10M investor, it's financially irresponsible to allocate your entire portfolio to tech. _It very probably will pay off very well_, but there's a significant chance you'll lose several million.