"just" the intersatellite links, which is research-level technology given the speeds, distances and precision required.
Tesla Autopot also requires "just" a few software updates.
Tesla Autopot also requires "just" a few software updates.
Swapping radios out for lasers isn't that much harder, there is some difficulty in tracking/alignment but it's space - things tend to stay where you put them, with whatever momentum you left them with.
Completely different ballgame to Autopilot which basically requires advancing the field of AI by another quantum leap before it's ready.
This statement is meaningless as written. You can emit as much or as little with a laser as you like. You could say "a lot of power is required for a reliable inter-satellite optical link", to which I would say "citation needed".
Iridium has been doing inter-satellite links since the late 90s and moving from RF to optical doesn't change the game that much.