I think you are mistaken. Big Tech has the same 'human' problems as classic companies- bloated middle management, fluff work, empire buiding, process, etc. They get away with it because they are growing and can increase prices right now. Sooner or later when the vast majority of companies realize they don't have to buy software at inflated prices- the house of cards will collapse. hypothetical e.g. GM will question if they should spend $1K/car sold on advertising, CRM and internal IT if their profit is $900/car.
Seems like in most of these cases it's the advertising industry that needs to collapse, not the traditional "I give you money and you give me some software" industry.