Commercial space is a tragedy of the commons in the making. What is its "carrying capacity", who calculated it, who enforces it? What are the long term effects, when do they kick in? What are potential secondary effects or tipping points? Astronomy is already a casualty as the sky stops being "dark". I guess who cares about fundamental knowledge when there is profit to be had.
Space is alot bigger than you think or make out, the effects on astronomy are short lived while they get into position
The more reassuring answer could be "there's already regulation Y that stops any single company from causing too much damage."