I somewhat agree with you. And I 150% agree that "rent seeking behavior" doesn't add to society.
But what if you want to sell a product you designed but can't afford to create it or to setup a factory for it, so you want funding, so you try to get investments, maybe by selling equity in your company. Is that not valuable to society? The people that take the risk that your product may not sell?
If everything I see in the news all the time makes me feel like the world is shit, well that's just unhealthy.
So I've subscribed to some good news channels on YouTube, and I try to limit the amount of bad news that I digest.
Staying informed of what's going on in the world is great, but not if it comes at the price of your sanity.
So read some good news, write a list of things you're grateful for, take a walk in a park, meditate in the sun a bit, and remember that overall people are kind (free open source software exists, volunteering exists, food banks exist, etc).