Because the stock will allow you to avoid paying taxes. By investing revenue in investment, as a company, you can avoid paying tax on the money. So if you're a small or medium sized business, you have two choices:
1) Cash out and buy a rapidly depreciating status symbol with the money, but get taxed on it at a higher rate.
2) Reinvest the money in growing your business.
At least that's what I understood from OPs reasoning.
Edit: Also spending money in depreciating status symbols is also a contributor to the economy.
