Big tech is no longer the disruptor. Mature big tech way too easily devolves into rent-seeking just like those other industries you listed, just with shinier tech.
Tech is still immature compared to those other industries. I believe generally the more mature an industry is, the more it moves from disruption to rent-seeking. There may be a time at some point in the future to consider breaking up tech when but right now it makes more sense to break up the more mature industries.