What can the Google Play Store use SMS rights for?

Question

Google

When installing from the apk store, the Play Store asked for very large rights. Including sending SMS. What could this be for?

Answer 1

in some cases, to activate the full application, all the well-forgotten old method is used, sending SMS and receiving a response, money is withdrawn not from the card, but from the account

Answer 2

money, dear comrade. This topic is well discussed on the Internet. They can simply extract money from you with your own consent, but this is also vague.