B2B companies often have to answer security questionnaires as part of the buyer's procurement process. Things like "how do you maintain separation of data between tenants?" or "do you encrypt data at rest?"
A SOC 2 attestation can bypass / answer some of these by default.
It's ironic how two-faced the Aadhar system is. On one hand, this is the largest scale modern public identification system I can think of with more complex biometrics than just fingerprints. The Indian government made a concerted effort to create Aadhar IDs for even the most remote villages in India.
On the other hand, I wouldn't be surprised if the security of the Aadhar database is already outdated. Even if the database is secure, corruption in the Indian government is so widespread that it would be easy to bypass.
A SOC 2 attestation can bypass / answer some of these by default.