Just doing EX Roulette once a day for 7 days will cap you. If you can't spare 4~ Hours a week to doing EX Roulettes, maybe MMOs just aren't a genre that gels with your life.
Hell, even just running an Alex Floor Farm (generally 4 runs) will net you 40 Esoterics, and if you manage a 4x Farm on all 4 floors, that's one third of your weekly cap right there.

The cap exists to limit the speed at which we obtain the better ilvl gear outside of raids. Tome gear is quite literally the definition of welfare for those who dont/cant Raid.
For those that do Raid, Tome gear is a great filler piece while waiting for your Drops, or in some cases providing alternative stat options at the same ilvl.

TL;DR, nothing wrong with the weekly cap.