Supporting the open web is a lot like supporting net neutrality, with the exception that the big tech companies don't think they have an interest in keeping the open web going.
It's like the fish industry not protecting the wildness of the ocean. Once they completely fish it out where will they get their new ideas from?
The mistake the tech industry always makes and shows no signs of not making again, is the assumption they can hire and manage creativity within a corporate structure. There are severe limits to this, as anyone who has ever worked inside one will tell you.