I guess you can imagine similar evolution that a century ago drove invention of aircraft carriers. When it became clear that battleships would become too large, too heavy and too expensive to meet their primary goal of dominating the sea around them.

Ie mobile platforms that are essentially defenceless on their own but carry large armament of drones and other electronic devices inside enemy territory that is meant to quickly take over surrounding space (surface and overhead) and do quick job of neutralising various threats like enemy personnel, drones, etc.

But I am not sure about that. Planes require a landing strip to start from and large hangars to store them and that drove the basic form of aircraft carrier.

There is no such limitation for electronic equipment and small drone carriers travelling on land. And I think, rather than presenting a single high value target to the enemy, it makes sense to have a lot of specialised units functioning as one through information systems that cannot be disabled with a single successful strike.