Ann: SVW: Seven Group Offer for Boral Announcement, page-8

I don't understand the logic, if a business A buy business B and locked you out of access business A then I can understand you can potentially miss out future earning, but if business A is open and trades and you can at any time join business A and get all the future upside I don't see what is the issue? on top of that business A demonstrated over decades that it is a far superior business compared to business B

it just like Google bought Youtube back in the day and offer those guys scrip to get google shares and they jumped onboard and they rode the google upside all the way to Trillion-dollar mark