They can try but without the moderation tools at the core of the issue, the subs will be inundated with bot spam till it dies. There will never be enough admins with free time to replace all the unpaid moderators let alone their knowledge. Not to mention doing a hostile takeover of subs without any understanding of each community's values will serve only to piss off more people.
Besides cashing out a dying platform, there is no winning for Reddit if they keep this up.