[forgotpwd16]

>This is also why there's rich ecosystem of browsers around it.

The initial releases of Brave, Vivaldi, and Edge (Chrome-based) were in 2016, 2015, and 2018, respectively. In 2015, Chrome already had a ~50% usage share, followed by Safari and IE, at ~10%, and Firefox at ~5%. Now the choice is between basing your browser on one with ~50% usage share and one with ~5%. Here's the first reason MS provided for the decision to migrate their browser to Chrome base:

>Although Microsoft Edge has very high web compatibility for both standards-based HTML and for capabilities added by highly-used browsers like Chrome, our unique web-platform codebase still faces occasional compatibility problems as web developers focus less on HTML standards and rationally focus on widely used platforms like Chrome to develop and validate experiences for their customers.

The "rich" ecosystem you're talking about could be due to technical merit but could also be irrelevant to it.