Lettuce eat lettuce

Modern web engines are basically mini operating systems. Long gone are the days where a web browser just needed to render basic HTML pages, handle some simple protocol actions, and render images.

To build something that supports all of the latest web standards, is secure, is always up to date, and on top of all that, is performant, requires a large group of very skilled devs working constantly on all those components.

Web development, for better or worse, has become a massive and rapidly evolving ecosystem that is constantly morphing and changing. Web apps are becoming the standard, and even “simple” modern websites are absolutely filled with different widgets and frameworks for all the different elements they contain.

If a very large/rich org or company decided to dedicate a whole team of devs to build a FOSS web engine, it could happen, but that used to be Mozilla, and look how that has slowly been failing.

What person with a website that has any significant traffic would willingly break it for 80+ percent of its users? That will never happen, sadly.

10 seconds? That’s generous.