I think the problem is that it's not obvious why getting super big is bad. Anti-trust is a law around abuse of customers by cornering a market. But what if they haven't abused customers? What if they treat customers really well and otherwise provide a lot of value? Why stop them from becoming that big?
(It is a big company, but I also appreciate being able to order on-demand compute, or getting like a hundred million things in under a day delivered to my door)