The fastest non-Google controlled web rendering engine Servo is trying to compete with only $1.6k funding a month:
https://www.phoronix.com/news/Servo-Engine-May-2024
Yes, they did have an NLNet grant, but that ran out.
If we want an alternative to Blink/Chrome, we need to fund it. This is a project where even a tiny regular amount could yield oversize returns: