How do I know you'll still be around in x years?
Any venture involves risk, and to offer guarantees about a company's future would be unwise.
Podiant is not a company, but a service offered by a company (Bloomsbury Digital Limited, registered in England and Wales). As such, the service can be subsidised by that company, instead of having to rely on loans and investment. This greatly reduces the risk, as it means Podiant is part of a financially diverse company that can support the product as it grows.
Podiant is a long-term plan with an aim at self-sustainability, but if those plans change, you won't be left in the dark.