Every manufacturer of remote wireless cameras is dealing with the same issue. The power budget of current Wifi technology is so much higher than zigbee or other micro-power technologies. Blink has the same ‘hub’ idea for exactly this same reason. Power consumnption is the achilles heel of the wireless “IoT” world.
That said, tons of progress is being made on low power ‘real’ native Wifi, The most promising coming from the School of Engineering at the University of California in San Diego which they discussed in papers at the ISSCC 2020 conference (led by Dinesh Bharadia and based on the same kind of work he did as a student at Stanford).
Maybe we see it in Cam 2022?