It could be strategic for the EU to have some influence on the web and to not be totally dependent on US-based companies.
How can an organization created by venture capitalists which depends on Google for most of its income commit itself to challenging Google?
Servo does not, even if finished, turn into a self-supporting product. Keeping Gecko going already is a huge challenge for Mozilla.
I don't have a lot of faith in Mozilla leadership's ability to compete, but it's certainly not that they don't want to try to compete.
I’m genuinely curious
IMHO leadership always lacked imagination around Firefox, and never had the fortitude to back any alternate investment enough for it to succeed.
More generally I wrote a blog post with my interpretation: https://www.ianbicking.org/blog/2020/11/firefox-was-always-e...
It's a natural human trait; I doubt Lobster is any better.
It will probably always pass ACID 3.