"Not sure what the long term strategy is, but I hope going public doesn’t kill them — seems like a nice little business that could just coast for years."
Yes, it does seem just like that and I believe we are witnessing an entity (backblaze, in this case) trying to switch from one zone of attraction:
Nice little business that throws off a ton of cash and grows organically but doesn't make anyone a billionaire ...
... to another zone of attraction ...
Scaled up enterprise that requires a sales and marketing effort (and accompanying infra) capable of revenue generation that matches the demands of an IPO and public shareholders ... and could possibly make someone a billionaire.
There's a big, deadly valley between those two zones of attraction and you have to push very hard to make that change. Very unlikely any kind of corporate culture or "human touches" survive that movement.
" ... seems like a nice little business ..."
Sometimes that's enough for people. Sometimes it's not.
Sometimes you paint yourself into a corner where the (IPO) is the only choice one has.
I wish them the best.