I start a company that makes widgets. I'm the only employee, so I make the widgets. I'm sure we'd agree that I'm producing something.
Next, I hire 10 people to make the widgets, and I take on a managerial role. Am I still producing something? It's not by my own hands, anymore.
Later, I hire people to do the management so I have no day to day responsibilities. It still is the conpsny I started, so if someone asked how I didn't have to work anymore, I'd say "I started company and my company makes widgets". Heck, I might take more direct ownership and say "you know all those widgets? I own the company that makes them, those are my widgets". I'd be insulted if you said I had no role in their production.
Even further along, you see how great my company is and buy it from Me. When someone asks what you do, you can say "my company makes widgets", can't you? You didn't start the company but you own it, and you can make it stop making those widgets at any time, so you can definitely take credit can't you?
So... Regardless of who created it, a 100% owner can definetly take credit for their company's production, can't they?
What about a 75% owner? 50% 49.999%
A share of stock isn't just a piece of paper, it's proportional unit of ownership of a company. If no one owns greater than 50% of the shares then there is no one with final say over what the company does - everything must be agreed upon by a consensus of the company's owners. And each person gets a vote in proportion to their ownership.
Don't like what a company does? Submit a proposal so the other owners who disagree can vote too
I remember during gulf war II, people were urging one another to divest themselves of Haliburton stock, like that would have any impact on the company at all. I suggested the other route / people who didn't like their war profiteering should band together and buy as many shares as they could. If the disaffected bunch could get 51% ownership they could actually make a change- I suggested that they could, through a simple shareholder vote and majority ownership, turn Haliburton into the worlds biggest lollipop manufacturer.
So. I do argue that owning shares of a company is equal to owning a company directly. You just need to reach consensus with the other owners. No different than me and you or a husband and wife owning a company, except there a lot more voices