Why is LibreSaaS a business imperative?
The importance of a full no-lock-in stack.
If any element of software or services you rely on is proprietary, you are in a position of facing extortionate prices, permanent service shutdowns, or inflexibility to adapt your tools to your needs.
Why is LibreSaaS a moral imperative?
For all the reasons Free Software generally is a moral imperative, but with the crucial flexibility of not having to run it on one's own computer.
The cloud is, as it is said, just other people's computers, but that 'just' can be a crucial distinction between having access to the power of some software and not having access to it. Ideally, LibreSaaS is provided by platform cooperatives so that the Free Software code is in fact being run on computers for which we share ownership.