Hmph. Did they? Even in 90% of those, it's not all so sunshine and roses for incels nor so pro-male as western women might like to portray it when convenient. There are still some 'expectations' from the bride's family that the groom not be too ugly, deformed, fat etc, and then there is the hierarchy of money and social status. Only in the most devoted 10% do arranged marriages work remotely like they should - one man for every woman in a given community.
And all of them combined are crumbling, eroded by rebellious women that keep pushing at their boundaries and western gynocentric coercion. Soon enough, the institution will be gone completely. And even if it weren't, what would the incel get in return? Some cunt doing her best to undermine and spite him and being disgusted by his form at every given minute, in the same house for the rest of his life. Sure, if you happen to live in the 10% ISIS-controlled territories or Pakistani ultra-fundamenlist areas where you could beat her day in and day out, you might argue that you'll do so to keep her in line, but at this point, you might as well just move on to acknowledging the real solution:
There are only two solutions to the innately hostile female brain, and both require intervention at the biological level.