Time Scale theory: Are software companies producing obselete software?

First of all, I would like to thank IOLO for making a wonderful software (System Mechanic). But with new versions getting released everyday you have GOT to ask yourself. Is the software you're buying worth the money? Sure, you get future upgrades for free. Im not denying that. But what is it about the future upgrades that makes you WANT to buy the software so much? Possibilities:

> Better user interfaces

> Better functionality

> Faster (?) than previous versions

> Supposed "overall" upgrades

Personally, I just stick to the first version of any software I use (that is barring windows of course!). Similarly, I was very impressed with System Mechanic 6.0 when it first came out. Even though IOLO came out with System Mechanic 7.0 and version 8 is on the docks, I still love the UI in System Mechanic 6.0 . Why? Due to the simple fact that I found this software worthwhile, unlike its
successors. This isnt just the case of IOLO and System Mechanic. Its the same with Nero 8. The software is jam packed with features that I dont use, and these end up hogging memory, installing shell extensions that I dont use, and in turn, I have to labor hard to uninstall these to keep my installations to the bare minimum. So, Why not just stick to the previous versions?This goes for each and every software I have used.
There is a theory I recently made up. Its called the "Time Scale Theory".It goes something like this:

"There is a peak in every software company's production cycle. At this peak, the software company has built up enough reputation to sell its most endorsed product in quantities of millions. It makes a lot of money and repute. After this peak time is over, the company merely survives on its earlier reputation. Any software produced henceforth will be completely obselete and will add features to make users' experiences worse than the previous versions."

The same thing goes for IOLO(System Mechanic 6.0), MicroSoft(Windows XP-Current, excluding windows Vista), IBM(The peak time seems to be neverending!, but it will end nonetheless!), Google(In its peak right now).