Author steamrolled by runaway technology
"Sorry, we're in the process of getting rid of things like that because a browser can't compete with M$."
Or how about, "I know you want to be able to display live changes on the customer's order form, but it just wouldn't be fair to all those garage developers out there."
You want to know what the client will say?
That's what they'll say. Then they'll go down to web design company B who will give them what they want. You wouldn't have to worry about me making life difficult for Mozilla et al, because I'll be out of business.
Let's try a different example. Say you have a 1927 Ford. Say this car has a top speed of 20mph. Should the speed limit be dropped to 20mph because you don't want to buy a modern car? Should all car owners be forced to putt around at 20mph because you don't want modify your car to go faster?
I think we all know the answer to that.
If Mozilla wants to be a serious competitor to MS then they will have to compete like everyone else. No one is going to change the rules just for them. No one is going to hold their hand and say, "There, there, we'll just make everyone else play fair."
If you want to develop an open source browser then go right ahead. But if you want people to use it then you better make sure it supports JS, and cookies, and Flash plug-ins. This is not an impossible task, all it needs is a central contolling group supervising a mass of developers, all working on different sections of the browser.
It works for Linux, it can work for this too.
But if you really think the answer is to stand in the face of progress and demand that it comes to a halt, then you better be prepared to be run over.