I think this is very similar to the creator of liquid soap. He knew that no patent could keep this out of his competitors' hands so he bought out essentially every pump liquid dispenser bottle maker.
Looking ahead to see where the need is going to be (not where it is) is an old trick which has withstood the test of time.
"I skate to where the puck is going to be, not where it has been."
Wayne Gretzky
This seems a little more like investing heavily in a company that manufactures pump-dispense bottles. It's hard to see how it could reduce availability.
By investing heavily in the company they lock in an exclusivity contract. They essentially buy all the production capacity of the only significant producer.
In increases global availability, but all that availability is going to them, so everybody else sees reduced availability.
Looking ahead to see where the need is going to be (not where it is) is an old trick which has withstood the test of time.
"I skate to where the puck is going to be, not where it has been." Wayne Gretzky