Aren't all of the companies that we are usually associating with doing bad things for the web (Microsoft, Google, Apple) now also pushing PWAs on their platforms? Google seemed far ahead of the push, Microsoft and Apple are currently on the run to bring them to Edge and Safari, and Mozilla introduced them to mobile Firefox less than a month ago.

And isn't there more of an incentive towards structuring the web coming from these big players as well? Google and Microsoft (and Yandex) created Schema.org, and are all giving them a priority in this switch from search results to instant answers.

I guess my point is to say that the companies that are locking the web are somewhat playing on both fields and giving webmasters products that are truly improving the web as well. It's far from being a one-sided battle.