The perceived value of the company you mean. This site regularly discusses companies that make almost nothing with huge valuations. Like with shares, once they're sold they generally benefit a few financially who play the game yet again. Very little is created in the process.
Whereas, the instances that have capitalists investing into new businesses or expansions in old ones do typically create some value for the economy. The capitalists also stand to make money, too. World of difference.
I do not stop to fascinate about the very concept of owning the land. How can you own something that preexisted the monkey your ancestors originated from? The answer to this question is the key to understand what are the super rich and why you are living in the city.
It is literal trolling.
I said nothing about confiscation, government control, or transferrence of (made up) rights.
1) Income from rent is not unearned. The reason it is called unearned is because nothing new was created. However, many services are this way. For example, fees paid to lawyers, or insurance fees and so on. Income earned from rent is income that comes from providing a service which is shelter or land for other uses.
2) Investment income is not parasitic. A share is a portion of a company. If someone buys a share, they are buying into ownership at a price they think is worthwhile. The prices of the shares are largely based on the value of the company. The value of a company can continue to go up and so profits come from the company being more valuable, not parasitically. Also, many shares provide dividends which is income and the right to vote.
3) It doesn't make any sense to me that rentiers free ride on the labour of others. Do they not have to pay for the goods and services they use?