With a couple million dollars, you can buy many many articles on the financial times and barron's. With a couple friends, you can get other friends in pension funds to allocate into you. With other friends, you can get beneficial messaging from all sorts of public and private channels. Banks and funds can pump your offerings for something in return if you went to the right bar mitvah. Of course this only lasts for some time, but if Billy the boomer and the Korean teachers pension fund bought in, you are already half way there.
Information is only relevant in the long term, in the short term the stock market is about FRIENDSHIP.
Sure, but this applies to any sufficiently advanced conspiracy theory and wouldn't be limited to markets. Secondly you the individual can just not buy the shares if you think they are overvalued. You're confusing your own interpretation of the valuation of some company with "the right valuation". Maybe you're just wrong and they're not over valued? Maybe you're right? It doesn't matter much, except you can buy shares in companies that your investment thesis and modeling suggests you might buy.