Will Titanfall or the sequel (or both) eventually come to PlayStation and/or Nintendo platforms?

That's getting more likely with every passing day. According to what a "reputable source" told GameSpot , Electronic Arts has secured the rights to a sequel.

Apparently, the option to land Titanfall 2 was based on the performance of the original title and clearly, the recently released game is doing quite well. We don't have exact sales just yet but chances are, they're impressive. EA won't officially claim the IP just yet but I'm sure we'll hear more about this in the near future. For the record, Titanfall is only available on Xbox and PC platforms, but EA CFO Blake Jorgensen was previously quoted as saying that any sequels could indeed come to other systems.

It really is inevitable. EA simply doesn't do exclusivity and by the time a sequel is ready to go, the userbase of the PlayStation 4 will be too high to ignore.

Related Game(s): Titanfall