If I buy shares in a company say RDSB (Shell) I am allocating my capital to that company and someone else is selling theirs as they don't want to own that asset

If I buy shares in a company say RDSB (Shell) I am allocating my capital to that company and someone else is selling theirs as they don't want to own that asset any more. I did this when the share price was low so I was taking a long term view that it would recover and I would capture that value and also have the dividend at an expressed yield on between 6-7%.