Drooping Barrels Question

I generally understand what barrel droop is, how it happens, etc. During my research I read that a "fixed barrel" gun (ie TX200) can still have a drooping barrel. 

To my questions: Do quality guns (HW's etc) continue to droop as time goes by and as the barrel is cocked over and over again? or is it just how it comes from factory - inherent droop that must be dealt with and mostly keeps that degree of droop for it's life? Are Fixed Barrels less susceptible to droop and could/do they droop further during their service? 

Thanks for sharing of your knowledge.
 
Mostly a factory issue. My rws 54 has a little droop. Got a rws lockdown mount w a droop compensator for the diamondback and its worked great ever since. Only time I notice and have to aim a ring or two high is if I’m shooting inside 15 ft or so.

Thought about returning it for a replacement but I got it 300$ cheaper than pyramid from amazon and it’s laser accurate plus the finish is beautiful. So I decided to stick w the slight barrel droop and haven’t regretted it for a second.