You have the right choose not to use Apple, usually a major version of OS X is supported for 3years. what software you are using? built for powerpc cpu? Apple

You have the right choose not to use Apple, usually a major version of OS X is supported for 3years. what software you are using? built for powerpc cpu? Apple is a hardware company yet, they are earning money by selling their products, so it is not hard to see why they keep pushing people to buy new product. You should stated your software name, and let us see whether there is a solution for it.