Well, to continue that timeline. "Big Tech" freezes their version to the last gpl'ed version, and each commences their own (non-trivial effort) to make their own version (assuming the last gpl'ed version was not feature-complete for all their future uses).
And of course, they won't share with each other. So another driver would be fear of a slight competitive disadvantage vs other-big-tech-monstrosity having a better version.
Now, in this scenario, some tech CEO, somewhere has this brilliant bright spark.
"Hey, instead of dumping all these manhours & resources into DIYing it, with no guarantee that we still won't be left behind - why don't we just throw 100k at the original oss project. We'll milk the publicity, and ... we won't have to do the work, and ... my competitors won't be able to use it"
And of course, they won't share with each other. So another driver would be fear of a slight competitive disadvantage vs other-big-tech-monstrosity having a better version.
Now, in this scenario, some tech CEO, somewhere has this brilliant bright spark.
"Hey, instead of dumping all these manhours & resources into DIYing it, with no guarantee that we still won't be left behind - why don't we just throw 100k at the original oss project. We'll milk the publicity, and ... we won't have to do the work, and ... my competitors won't be able to use it"
I quite like this scenario.