Earlier quoted context omitted.
It's good for US tech because it is yet another cost and restriction EU startups have to face before they can grow to scale and profitability.
It applies to everyone who wants to serve EU customers. As for startups: depending on what kind of personal data you are collecting, being GDPR complicit shouldn't take more than a day. If it takes longer you are building a business around personal data, and I think you should know your stuff (not just GDPR, but also what kind of data you are collecting and why).
And you should probably pause and ask whether your proposed business will provide a net benefit to the world, or if it's just an attempt to make money regardless of the consequences to society.
Not to say there aren't any worthwhile businesses to be created around personal data, but experience suggests that some skepticism is in order.