Because web browsers are stupidly complicated and expensive to maintain. The only real competitor is google who has infinite money to maintain the chrome superiority and you need resources to maintain safety, fix bugs, and adhere to new standards, which get every time more complex (also thanks to google that doesn’t want competitor). You need a lot of budget for that.

I read millions of “monkey” instead of “money” and was trying to understand if you were insulting browser developers or implying that thousands monkeys could to do the same work as a developer

Sometimes I do, when I have particularly funny and enjoyable conversation with my friends, or ones with my SO that become important for our relationship, but I find myself doing it less and less, don’t really know why.