Steraks/maw can a riot answer?

As an ap assassin main, even if I'm fed, the enemy ad carry/any ad is usually smart enough to snag these two items. This basically prevents me from doing my job and renders me damn near useless. If I blow all cool downs and completely hit everything on adc they should insta die. But if they have these two items, they don't. What do we get to make up for this. Zhonyas? This isn't a troll post, my question is do you guys expect something to be done about this on the future? So many on here complain of assassin meta, but truth ap assassins are basically dead right now because of these items