And one might argue they are taking the sane approach to the upgrade treadmill. It&#x27;s easy to forget technology is supposed to solve real problems and that there&#x27;s no economic incentive to use new toys to solve already solved problems, possibly introducing new issues with less well-known solutions.<p>The fact businesses are extending the life of systems not because they are unwilling to invest in upgrades but because they work just fine is a sign that the industry has reached a good level of maturity. It&#x27;s a good thing. We should all be working collectively to solve new problems instead of reiterating over the same problems again and again.<p>In the old days of NT4 a 4-year old system would accumulate maintenance costs. Today, Windows 2003 is 13 years old and still pretty serviceable.<p>I&#x27;d be more worried about businesses accumulating unsustainable technical debt than accumulating old (but stable) technologies.