Post like this are misinformation because people don’t understand the difference between revenue and profit.
Oh yes. For the individual, very few costs can be deducted from taxes, and investments are not considered costs.
There’s also different tax rates and subsidies available to businesses that individuals can’t access.
But my point stands. People always get angry about large revenues which are not taxed. Changing the system so that a tax is also levied above the line is not impossible.