You know when people say that AD outscale tanks late game...
Is it normal for AD to outscale Armor Tanks?
There are 3 types of Tanks for me,
Armor Tanks,
Magic Resist Tanks,
Then Hybrid Tanks,

Armor Tanks, are Tanks that hard counter AD champions and I don't think they should get outscaled by AD, they can still die to AD champion but I prefer the IDEA of a mage bursting them down. Magic resist tanks are champion that have MR steroids, Regen based on Spell cast by surrounding or % Damage reduction. Hybrid Tanks are tanks that provide utilities such as Shields to mitigate damages, with high base health aswell as having great scaling in both defense.
A Rammus that build Magic resist against a full AP team isn't gonna as effective than a Galio or Maokai. Armor Tanks don't have High Regen rate or anything that could regen their Hp compare to their counterparts the Magic resist tanks.
In other words, what I'm trying to say is that AD should not outscale Armor Tanks.

and
because no other adc will be useful. Every champ will be a tank bruiser, and nobody will bother doing anything because fights are basically just league of health regen.