I personally don't feel that ADC's are as weak as people are making them out to be.
I think they're just building them wrong, AKA rushing
into Crit items. If I'm not mistaken, this item wasn't designed as compensation to the crit changes for marksman, it was designed for other things like Assassins or Bruisers top lane. Every time that I have built Stormrazor first, my damage is just negligible because marksman want to auto you as much as possible in a short duration, not wait a second and auto again.
I play a lot of Jinx for example, and havn't had any issue with playing her bot lane, I've actually carried games more often than not. I personally avoid building Stormrazor as much as I can, because the item self isn't cost efficient in my eyes, for marksman at least. I instead rush a Zeal item into IE, into another Zeal item so I get 100% Crit on top of the true damage, and you just melt people. Of course, this is using Jinx as an example, but I'm sure it'll work with Tristana, Draven, or anything that use Crit to their advantage.
Of course, rushing a zeal item first means you're not going to be doing hardly any damage until you get your first BF sword. I haven't tested rushing a BF sword into completing a Zeal item, and that might be the best option here.
But hey, this is just my personal experience.