> In the real world if you insist on breaking your paying customers' processes and products over and over again, pretty soon you won't have any paying customers

> In the real world if you insist on breaking your paying customers' processes and products over and over again, pretty soon you won't have any paying customers any more Business 101, your profit is in higher margin or lowering your spending/cost. If your business is stable and making money your customers feel safe and are happy. Deprecation lowers your cost (system complexity, less maintenance, dev time -> new features, new revenue streams). If you have an almost infinite resources then of course why not, you can support all possible API versions (there are few companies who can afford it and doing it at scale, AWS and Win32 APIs)