They are less mobile than Eyebots so their use for advertisement would be limited to the area around locations we control. Maybe if we re-design them into a ball shape? We can't really use them for anything else, given their low combat-power and lack of arms/hands.
Maybe we could sell them as small helpers? Developing models with Decontamination Sprays or Cryo Sprayers?
Regeneration Fields, Electric Pads, and Enhanced Sensors all require more mobility to be optimally used, either to quickly reach people or to cover large areas.
Honestly, the ability to develop networking robots alone would be worth it. With that, we could develop ways for a stationary AI to boost nearby robots. Or to develop better teamwork between our robots and let them accomplish more complicated tasks.