There has long been a debate over the benefits of individuals buying annuities products for their retirement needs. But Motley Fool contributor Jessica Alling shows investors a way to jump in on the recent spike in demand for annuities without actually having to buy a single product. Jessica discusses the opportunities available for big insurers and other retirement solutions firms, like AIG (NYSE:AIG), ING U.S. (NYSE:VOYA), MetLife (NYSE:MET), and SunLife Financial (NYSE:SLF), while also giving investors some perspective on which firms are likely to come out ahead of the pack.