Journals want high-quality submissions from well-known authors in order to maintain the brand. They also want ongoing subscription fees.
Authors want to be published in good journals, but they also want raw publication count to be high. So the primary incentive may not be intellectual honesty.
Reviewers often are in competition with the authors of the papers they're reviewing, hence the term peer-review. They have an incentive to prevent publication of competing work.
Readers want all knowledge to be free, so they have an incentive to not pay for journals. They also want to know which works are important and which are crock, so name-recognition comes into play.
I've probably left something out, but you get the idea. Coming up with new ideas is fun, but until you align the incentives, nothing meaningful will happen. And you've got hundreds of years of inertia and thousands of careers in the balance.