If you're going to have a billing system that you need to rely on for the functioning of your business. You're going to want to have ongoing support for that sy

If you're going to have a billing system that you need to rely on for the functioning of your business. You're going to want to have ongoing support for that system, this is why so many enterprise options are Windows based. Especcially in earlier years, and financial suites, once implemented, are very rarely ever changed. If its still bringing in money, the higher-ups dont care.