No one rejects the opportunity, because no one is ever asked to consider it.
For a possibility to become a decision inside a large enterprise, it has to survive a chain. A manager with a number to hit this quarter. A director defending a roadmap already committed to the board. A committee reviewing a portfolio it approved last year and would rather not reopen. Every person in that chain is doing exactly the job they were given.
Competition tightens the chain rather than loosening it. Pressure from a rival does not send an organization looking for new ground. It sends the organization deeper into the ground it already holds, because that is the position it can defend this quarter and the one it will be measured on. The obvious answer is to fund research, and most large firms do. Research then arrives with a mandate: these product lines, these materials, these adjacencies. It explores genuinely, inside a fence somebody else drew.
So the opportunity is never rejected. Rejection would require someone to hear it. There is no step in the chain at which anyone is asked what else the enterprise could be, which means the answer is decided by omission and nobody in the room ever casts a vote.