most progs now are timed subscriptions, as most folks would want continuing support,,yes i know the common misconception is that $20 they got for that prog was like lottery winnnings and now their totally wealthy beyond belief...reality is the $20 bought the prog but after splitting it with the employees and the mortgage co. and the elec co. and the guys who supply the servers, and the bandwith costs from an isp,etc. the $20 dont go very far...I pay more than that on lunch...
lets say you build a car and sell it for $20 but the roads constantly changing and the car you sold to folks needs updates to be able to work smoothly on the ever changing new roads...as the manufacturer would you be able to afford constant indefinate upgrades and updates on a car you sold for $20? think how much you would have in 3 years at that rate...nothing.. you would be bankrupt.... employees and buisness require $$$ to run.. good will and great intention dont pay the light bill

as for tweak vista ? i cant answer... but i support companies who are smart enough to keep the $ flowing to pay for the resources dedicated to keeping their software supported and up to date

they could always go the way of the larger companies and offer free life time support .. but the progs would cost $700+ like the os's do

oh but wait according to todays software terminology "life time" is only 7 years from release date... then your on your own

XP lost support how many years ago now ?