Grievous Wounds too Accessible?

Is it just me, or is GW way too easy to obtain in the game? The fact that it's strapped onto a core item for most mages (most of the time it's not even built for GW, it's built just because it's the best item) and to throw on top that it's really cheap and easy to get as an AD champion (800 gold) and as a tank (900 gold) makes some champion just feel unplayable. I can't tell you the last time I saw a Mundo, and I feel like I can almost never pick up Soraka because the enemy adc just first buys executioners calling. Not to mention it feels like the effect lasts a crazy long time (executioners 3 seconds and morello a whopping 8 seconds) the only one that seems to have counterplay is the bramble vest because it only lasts one second and you're the one causing it to yourself.

TLDR: Maybe it's just me, but it feels like GW is immensely suppressive and effectively nullifies champions too easily and cheaply.