(4/4)It costs tens of billions to develop a GSE, so Mozilla is unlikely to develop one from scratch. (Doing so would allow them to generate revenue without relying on a third party.) Overall, the proposed remedy will likely force independent browser developers to find new ways to generate revenue.

(3/4)Even if Apple is incentivized (due to the loss of $20 billion/year in revenue) to develop a general search engine (as DOJ hopes they will be), their built-in user base and ecosystem-focused business model make it unlikely that they will pay for default placements on third-party browsers.

(2/4)For the same reason, Google may have a hard time finding a suitable buyer if it is forced to divest Chrome because there is no clear path to monetizing Chrome as a standalone entity. Neither Bing nor Duck Duck Go are likely to pay as much as Google has historically paid for default placements.