This is just my opinion, but here goes...
The main reason I think MMOs (ESO) are far more popular on PCs than on Consoles?
Add-Ons, and Mods.
Yeah, pretty simple right?
There you have it...downright obvious.
Because Add-Ons, and Mods, add...wait for it...OPTIONS to the players.
So, how does a company make an MMO just as popular on their console version as on their PC version?
Or, in fact, make their PC Version even more popular?
This may sound simple...just add those SAME OPTIONS that the most popular Add-Ons/Mods add to the PC version to BOTH Platforms.
This makes it easier for their Players to
enjoy the game the way they want to...and makes them play it more,
and spend more money.
Now, why wouldn't a company that wants to have a popular game on both platforms, and more importantly MAKE MONEY, not just add those OPTIONS?I honestly do not know, and do not care to speculate.
If a car company offered my a base car for $20,000, and then said "Or, you can have this Optional Upgrade that has better gas mileage, and more horsepower for the same price."...I think I would take the one with The Options.
Sorry for the rant...it has just been building up in me since, well, forever. 
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EQUALIZE ALL PLATFORMS!
IF ONE HAS IT...ALL SHOULD HAVE IT!!
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~MegaServer~>PS4 (NA) ~PSN~>Ace-of-Destiny
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I don't care what platform it is on...an MMORPG without Text Chat is NOT an MMORPG!