I would assume some of that is acqui-hiring. Google acquires a company and looks at which employees are the outstanding talent. The best employees are poached for projects Google cares about while the rest are left to keep the product going without the thought leaders who built it.
It would be a nice gesture, but I will believe those promises of support when they have teeth to them.
What happens if they stop doing it? Do I have to sue them for breach of contract, have to prove actual damages, and settle the class action lawsuit for $5 in store credit?
What happens if the company goes bankrupt or creates a new subsidiary to service the product and the subsidiary folds?
What level of support are they obligated to provide? What issues must be fixed and how promptly?