Imagine you are a company, like Wiz, that is still growing fast. Sure, your valuation could be based on revenue today. But why would you sell if you're "worth"

Imagine you are a company, like Wiz, that is still growing fast. Sure, your valuation could be based on revenue today. But why would you sell if you're "worth" $12bn right now, but you'll be "worth" 32bn in a few years? Why give up the control? The only way for a company like Google to buy Wiz is to add a premium. Otherwise the company will just say "no". This literally happened to Figma as well. And there is a history of this with companies like Instagram/WhatsApp. In retrospect, was it stupid for Facebook to acquire Instagram/WhatsApp for large premiums?