Profitable companies have usually figured out that it's better to buy a solution that solves their problem rather than: (a) pay for engineer time to integrate a solution that isn't quite right, (b) take the opportunity cost hit while waiting for (a) to be done. These costs can pretty quickly dwarf the purchase costs of licenses and hardware. Of course if there's a free solution that just slots right in, double bonus, but for the most part the cost of hardware/software is noise next to the cost of people to maintain it.