Doesn't the objection of the b2b market to a one-man (or woman) band implicitly register a practical problem with such a set-up - namely that if the operator fa

Doesn't the objection of the b2b market to a one-man (or woman) band implicitly register a practical problem with such a set-up - namely that if the operator falls ill, the service will come to a halt. This is also a pretty big pitfall for more consumer-facing startups, as it's a major reason not to return.