Computers introduce a means to lock people in that don't exist in other markets. In software products there are often ecosystems that tie directly in to the product/service which are not required to be shared with competitors unlike with road systems for cars.
Regulators ought to look into ways to enforce measures that require the companies to completely open their ecosystem to competitors. Or look into ways to standardize these ecosystems and require every service/application/website comply with them (similar to how media companies are forced to include closed captioning).