Well now they have to take over the subs and get new moderators. They won't just sit there and watch Reddit burn further.
For the 2 days private protest, their comment that it will be over soon was appropriate. As giving an exact time frame allows to know the exact end of it. They could just sit there and wait it out.
Now with the indefinite protest, they have to act. And to get to content onto Reddit again, they will probably be looking for new unpaid strike breakers mods for those subs, so they don't have to actually hire and pay people to moderate content on their soon publicly traded company website.