Around 10 years ago in my condo building we were having water issues, so we replaced the over 25 year old windows.
(I moved over 7 years ago so I don’t know what the current state is.)
We had a building consultant chat with the Condo board. He explained that windows and other exteriors components of a building are designed to shed or process water, not simply repel it.
He also explained the limitations of window design (window material like plastic or metal typically doesn’t have the same coefficient of expansion as glass) in extreme temp.
However, the biggest issue he mentioned was installation. You can have proper material and design, but if the installation is done incorrectly nothing else really matters and problems wil occur. We had our consultant watch the installation of a few windows to ensure it was being done correctly.
In 2008 I would say the likelihood of improper installation of windows or siding is high, while the evidence proving improper installation done by specific entities is low.