They way they DO stay online for a resilient amount of time is by generating money, i.e. through donations.
In fact, they used to say exactly how many months they have left. Now they don't say that, because they feel they can allow themselves that. Does that mean that it makes sense to stop fundraising? No. Because the minute the public doesn't feel that there's an urgency in donating to your cause, then it's someone else's problem, meaning it's nobody's problem and that's how you kill NPOs.