They are requiring a mobile phone number for some time now even when not on VPN, TOR and alike. This is very worrying that more and more services are requiring

They are requiring a mobile phone number for some time now even when not on VPN, TOR and alike. This is very worrying that more and more services are requiring a mobile number, especially for services that are used with business background. That means, in your business you need to have a business mobile. You need to track who registered with what phone number and so on. Email accounts are much easier to manage. But mobile numbers is a big problem, especially when employees leave and mobiles get deactivated.