When a company issues shares, I understand how it would make sense for it to pay potential dividends if I purchased shares and thus enabled it to use my money to conduct business and make a profit. What intuitively doesn't make sense to me, however, is why the company would agree to keep paying me dividends on the basis of that initial investment, years after they've spent the money I invested. What does it gain? Is offering ownership simply what they need to do in practice to attract investors, and anything short of that would not be viable?
One argument that can be made is that possibly, the long-term success of the company wouldn't have happened without that initial investment of the shareholder, but that seems too speculative to be accepted a priori. Another argument is that it creates a supply-and-demand driven market for co-ownership, but that seems to only make sense if the company (i.e. founders, employees ...) owns most of the shares itself (i.e. it can sell them later at a higher price to raise money).
I read How does the purchase of shares on the secondary market benefit the issuing company? which is related, but ultimately a different question.
EDIT
To clarify some points in the light of various ill-mannered comments:
- I'm trying to better understand why stocks exist in the current form, contrary to potential other ways to raise money for a company.
- I understand the concept of ownership and am not implying that something should not be traded when owned; I'm merely trying to better understand why companies would give away ownership in the first place, as they currently do. It's obviously attractive to buyers, but there must be practical reasons that make them attractive to companies as well (in contrast to bonds and other real or hypothetical instruments).
- There are disagreements about the morality of profiting via stock ownership in political/moral philosophy. One question is the one of being ethically entitled indefinitely to profits derived from the work of others because of an initial investment, and I'm trying to deepen my understanding.