Comment by pron

Even the fact that value keeps increasing doesn't mean it's a good idea. It's a good idea if it keeps increasing more than other value. If a piece of software is more robust against attacks then the value in that also keeps increasing over time, possibly more than the cost in hardware. If a piece of software is easier to add features to, then that value also keeps increasing over time.

If what we're asking is whether value => X, i.e. to get the most value we should do X, you cannot answer that in the positive by proving X => value. If optimising something is worth a gazillion dollars, you still should not do it if doing something else is worth two gazillion dollars.