Price "gouging" (if you can call it that under the circumstances I'm outlining) is a good thing as long as prices are going up relative to the risk taken in the seller procuring the goods. To use an example that exists outside of the controlled economy, if drug enforcement teams are cracking down hard on a city, the price of marijuana is going to increase. The dealers and growers are taking a much more increased risk to keep supply.
However, here in Michigan after 9/11 (a place not directly affected by the disaster), gas prices shot up drastically, immediately. The governor stepped in and set gas prices at a controlled rate, with serious repercussions if the price limit was breached. That's an example of bad price gouging, in an area where that type of activity should be controlled. There was no immediate threat to Michigan's gas supply, nor to the Michigan transportation network. Prices were not going up as a result of increased risk in the market, but because companies knew they could incite a buying panic at a hugely inflated profit margin. They knew that when their supplies of highly profitable gas ran out, they could get more at the normal rate, then sell it massively inflated again.
What Uber is doing while operating in NYC right now is an example of increased risk. NYC is in a disaster zone. There is a massively increased risk to operating a business on the streets of New York currently. With the public transport out, they need more drivers. Depending on the area, they might need drivers willing to take the risk of operating on these streets. There is a risk to the continuity of their business, a need to fill demand with limited supply. Increasing prices temporarily makes sense. It's the tradeoff between everyone can afford it but no one can buy it versus some can afford it but all who can will be able to buy it.
If the government wants to limit the ability of the market to assess risk, maybe they should compensate Uber and other hire-car companies (aka cabs) to help offset the supply vs demand equation.