ranged champs just get % boosts on items 
and its upgrades upgrades, APs have 
/ 
all have a condition for their ms bonuses, or have a cooldown. fighters have 
but it's not what all fighter champs want.
i am wondering why this is? i think it makes no sense, some fighters and tanks do not even have a dash but many ADCs do, and they have their team to help them stay safe, too.
Penns3 votesCud be because their weakness is often supposed to be "dont get in their range"
Mens Hair Club2 votesbut many other classes have items to cover weaknesses
adc weak to burst? get GA and maw. trouble vs long range mage? rfc for extra reach
mage too? zhonya and banshee
assassin get item like duskblade for anti vision and give them more dmg, they have same counterplay as fighter (don't be close) but it's fine for them?
tank get Randuin tabi to counter adc crit dps when they meant to lose to dps
fighter can't have items to move faster?
Nut on my Butt2 votesActives aren't really that conditional. Dead Man's has reliable uptime as well, and melee champions in general have much higher base movespeeds than ranged champions.
Mordepool1 votesBump for visibility
Marshbouy1 votesBecause ranged characters are supposed to stay at range (except for some exceptions like Graves). One of melee's weaknesses is needing to be in melee range to deal damage, so allowing them to have a lot of free mobility would be stupid. It would completely remove that weakness. It also helps that a good number of melees also have some sort of dash, blink, or MS boost in their kit that gives them a specific window of power.
Mens Hair Club3 votesbut melee champ do less in melee too
so they have a hard time getting to fight and then do less when they get there? that works for league?
many range are mobile too
Mordepool1 votesIt's harder to apply the Damage for melee and they do comparable Damage Hence the Huge disparity