This could be done via blockchain-based smart-contracts. Self-executing contracts could trigger a mass migration of user accounts to another SaaS provider if so

This could be done via blockchain-based smart-contracts. Self-executing contracts could trigger a mass migration of user accounts to another SaaS provider if some set of conditions are met, like for the example, the number of accounts party to the smart contract reaches a predefined threshold. The purpose of this smart contract could be even more general purpose than that, in being structured as a Decentralized Autonomous Organization (DAO), with accounts voting to decide what the accounts will collectively do.