If users had a pop-up which allowed them to select more than just Edge or Chrome, other browsers may see an increase in users. Chrome is as much a default as Edge is in that way.
I think the bigger issue is them potentially losing their Google income.
They've failed to diversify their income with a bunch of failed subscription services, Google is in hot waters because of anti-competitive behaviour; they're going to need something.
Which isn't to say I like it. But "this is happening because they take Google money" is parroted beneath every slightly negative thing Mozilla does.
There's an article linked, perhaps it might give some insight.
If you’re wondering why Android 15’s codename is Vanilla Ice Cream and not something that starts with the letter “A,” I can’t say for sure. It’s likely because Google had already chosen Vanilla Ice Cream as the internal codename for Android 15 before the first trunk stable release, so it didn’t want to go back and change every mention of the codename, especially since that could break some build flows.
So this build change actually originated in the upcoming Android 15, but since that codename had already been chosen they didn't rename it to A.
Chromium does have some Google things in it. Like what happened with the built-in extension giving Google websites special permission to read the hardware info of your computer.
I'm sure those developers don't need any material like, say, software, or a desk. Or other staff to write those paychecks and resolve disputes. Or give direction. Nor would the company need to host any downloads or other websites.
If users had a pop-up which allowed them to select more than just Edge or Chrome, other browsers may see an increase in users. Chrome is as much a default as Edge is in that way.