Because there's an entire ecosystem of tools/extensions for each manufacturer with 6 and 7 digit price tags that aren't portable between them, not to mention training and contractual obligations, etc. Swapping everything all at once is not generally viable.

So all of the manufacturers are doing this? Why is only John Deere (Apple and Tesla for some reason) brought into this? If it’s a industry wide problem in farming shouldn’t we be discussing the issue in farming and not just three companies, two of which aren’t in the AG business?