Given 0-day vulnerabilities and supply chain risks, I'm going to take a little bit of poetic license and say it's impossible to stop ransomware attacks, certainly with commercially viable levels of investment in infosec. You can mitigate some of the exposure, but the level of validation required to continuously guarantee that those mitigations are intact and effective.

So attacks will continue, the level of impact will hopefully be reduced along with the commensurate justifiable ransom payment.