From a security standpoint, Apple wouldn't have anything to turn over, because they never had it to begin with. Google et al, hoover up everything the least bit interesting.
However, it Apple has capitulated to a combination of carrots and sticks. Today, it enables surveillance of its customers.
Apple VP Lisa Jackson:
>Please know that Apple will continue its work with law enforcement. We share law enforcement’s concerns about the threat to citizens and we work closely with authorities to comply with legal requests for data that have helped solve complex crimes. Thousands of times every month, we give governments information about Apple customers and devices, in response to warrants and other forms of legal process. We have a team that responds to those requests 24 hours a day. Strong encryption does not eliminate Apple’s ability to give law enforcement meta-data or any of a number of other very useful categories of data.
For an understanding of what data Apple gives surveillance operations access to, the following list is enumerated in an older Law Enforcement Access document: https://news.ycombinator.com/item?id=12983081
It's also important to understand that the purpose for this surveillance (this following section being informed by the Snowden Disclosures) is not merely for investigative work or for tracking down terrorists. Intelligence work of this kind is used in HUMINT operations (mass propaganda), for industrial espionage, for diplomatic espionage and for signals collections (intelligence used to break into networks).
It is not clear whether Apple shares these concerns with the US government, or whether it shares lesser concerns that show up at a much lower frequency.
Facebook, Google, Apple, Twitter, etc. all pretty much fall under the "telecom" label these days in what they do, so it's not surprising in the least.
Just expanding on that - not dipping my toe into any other part of this debate!