Rolling your own, though, does come down to hammering in the extra nails... and hoping that whoever's doing the job knows where to put those supports in place.

Rolling your own, though, does come down to hammering in the extra nails... and hoping that whoever's doing the job knows where to put those supports in place. If you have someone who looks into the future and sees what issues might come up in a few years, then it's way cheaper than relying on frameworks. If you don't, then you're stuck with some janky software that no one else can fix. I think this is why the larger the scale, the more likely companies are to rely on frameworks which themselves are janky, but at least well understood.