You are correct to say that these are not in broad distribution today, but we are building for the future where we do have ubiquitous quantum repeaters and interconnects. We are working with manufacturers, universities, government labs, and NGOs to do early research in this space and centering these operations in Wyoming, Colorado, and New Mexico.
In the meantime, it is also important to build the infrastructure for distributed hybrid applications and incentives that enforce cooperation in the presence of adversarial nodes.
For a short review of papers that are relevant to this area of research, see below:
Experimental demonstration that qubits can be cloned at will, if encrypted with a single-use decryption key https://arxiv.org/abs/2602.10695
Long-distance coherent quantum communications in deployed telecom networks https://www.nature.com/articles/s41586-025-08801-w
Entanglement of nanophotonic quantum memory nodes in a telecom network https://www.nature.com/articles/s41586-024-07252-z
Continuous operation of a coherent 3,000-qubit system https://www.nature.com/articles/s41586-025-09596-6
Quantum Entanglement between Optical and Microwave Photonic Qubits https://journals.aps.org/prx/abstract/10.1103/PhysRevX.14.03...