Your points are contradictory. If consumer staples regularly outperform other market sectors, markets can't possibly be efficient. If they were, there would no signal to extract from the noise.
The whole idea that markets are "efficient" is specious nonsense anyway. If they were, they'd simply be a perfect random number generator.
In fact billionaires do regularly outperform the market. Bill Gates has made far more money from investing than he did from Microsoft.
and some billionaire fortunes have been lost; in the end, you get the overall market performance. Maybe there is some excess. It would be interesting if there were a study about if stocks of companies by Forbes 400 members outperform stocks which don't have members.
I said more efficient than ever. That doesn't mean 100% efficiency.
The whole idea that markets are "efficient" is specious nonsense anyway. If they were, they'd simply be a perfect random number generator.
In fact billionaires do regularly outperform the market. Bill Gates has made far more money from investing than he did from Microsoft.