Earlier quoted context omitted.
A software can only ever be mature for a period of time. Technology advances, work practices change, and your software should adapt to it. Imagine text editing stopped at Notepad, or image editing at Photoshop 1. Also, your second paragraph leaks of Americanism and undoubtedly, people are happier and healthier with stable jobs.
And consumers are better off when we don't keep the candle stick maker employed in the led factory.
This is software after all - surely you're aware how throwing out the old solution and trying to build a "better" one results in a long slog of making the same mistakes the old team/product made and fixed (but could have warned you about if they were kept around).