But those sorts of constant conflict should drive MORE innovation, not less.
If you had a sword and a horse in the Civil War, you were in great shape. If you showed up with them in WWI, 50 years later, you were in trouble. 20 years after that, you were slaughtered without a 2nd glance. A WWII fighter plane would never even see the plane/ship/missle that killed it using Gulf War tech.
25,000 years, and nothing appears to have changed a bit. If anything, the Old Republic stuff looks newer, and it's been 25,000 years of stagnation and backslide. Looks like same tech, just dirty, broken down, and poorly understood.