As frontend developer I would say an ideal world would look like all big players contribute to one browser foundation which is free of any business interest. The whole render process should be the same for every browser in my eyes. Everything else just makes the life for application developers, browser developers and users harder. Browser developers have to implement everyhting again even if another browser already supports the feature x. Application developers has to work around missing features and users suffers from the conflict.
So in my eyes a basic browser where everyone contributes to would be very nice and lead to Firefox and Edge finally are on the same level as Chromium regarding feature support. I mean they didn't manage to support Shadow DOM API at all and Firefox just disabled service worker support again, how can that be?
From these base everyone can do what he wants and implement trackers or tracker blockers as he likes to do^
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