Don't look at me, I am not the one creating these regulations.
But why do you think the tech companies won't be able to create an encryption standard? If the whole engineering community can agree on standards to build the world we live in, surely software developers can manage to create some standard for interoperable communication.
Although, I guess if the EU is going to require that every Tom, Dick and Jane have access to the secure enclave, encrypted messaging might be the least of our concerns.