Tesla just announced a big shift in its business direction that could change the company forever.There are many reasons to dislike Tesla (TSLA +3.47%). However, it is hard to deny that the company is highly innovative, as it essentially created the modern electric vehicle (EV) market. But the big reason to buy the stock right now may have nothing to do with EVs. Here are some things to think about before you buy Tesla stock.A controversial CEO and an expensive stockElon Musk, Tesla's visionary CEO, is a pol ...