I'm currently reading a book called "Technofeudalism" by Yanis Varoufakis that investigates things along the lines you've said. My main takeaway so far is "Capitalism" hasn't always been one thing and it has evolved over the years. Capitalism of today isn't the same as the capitalism we had before the oligopolies and cloud giants, and that makes me thing differently about the statement "capitalism isn't great either, but I do think it's the best system we have."
I would highly recommend the book!