> So why don't all those who own the millions of shares do that?...

Because, most people holding this stock are long term investors.

Because, what Szabó said is matters to them. He spent more than half of his life researching the Makó trough. He does understand the Makó trough better than anyone else.

Because, investors believe that this project is too big to be dropped by XOM just after one well.

Because, if they believe all the above is true, then they've already figured it out that if everyone sold into this market the price would drop near zero, but then when everyone decides to get back in, the price could be nearer to a dollar.