this is almost generally true. concerts, clothes, consumer packaged goods , utilities -- almost none of the brand websites are the top rank.
You could try SEO strategies, and they help but you will not likely win.
Just spend the money on ads. That's what your competitors are doing.
it varies by industry and traffic.
It's better to think about your goals. what are you trying to convert when the traffic arrives at your website? Joining a mailing list, adding to cart, buying a product? Contacting sales? How many of those leads do you need a month?
then work backward in the funnel and see how much google traffic you need to make that happen.
And remember google is a shrinking segment -- other social media channels will likely have a bigger impact.
websites aren't driving a lot of action these days.
How much money?