You own voting rights, that's it. The recent Twitter stuff emphasized this. Some people were wondering why they can't just refuse to sell their stock (if the deal passes the various requirements, which includes a shareholder vote) if they don't want to. The reason is because they don't actually own anything, just a vote. If the company as a whole decides to go become a new entity (going from public to private in this case), the entity you owned a vote in no longer exists.

In an increasingly large number of companies even this notion of a vote is a facade. For instance at Facebook and Google, Zuckerberg and Larry/Sergey would maintain majority control even if you bought all the stock on the open market, because of stock tiering. So when you buy stock in these companies you're practically not even buying a vote. I mean you technically are, but it's like participating in an election of with 100 other people, where one guy gets a vote that magically counts as 101 votes.

That why things like the occasional 'share holders look to force Zuckerberg out' type articles are 100% clickbait. Google and Facebook also even tried to force scenarios on shareholders where the real owners of the company were going to "sell" their shares without giving up control by introducing non-voting shares. These plans were only stopped thanks to the courts because they, of course, passed a shareholder vote. [1]

[1] - https://arstechnica.com/tech-policy/2017/09/shareholders-for...