There were previous warnings ..if anyone was listening ...which they were not.Try this unheeded warning.Not necessarily. No other big liner, to my recall, did founder under the unique circumstacers that made Titanic so tragic. She sank slowly enough that there was time to load/launch all the lifeboats (unlike the Lusitania) and far enough from any help (note: I did not say "any other ship") to lend assitance (such as, say, the Andrea Doria). It's not unreasonale to hypothisize that the transatlantic liner era could have ended without ship ever having being required to carry life boats for all passengers.
OTOH, there would probably be no International Ice Patrol so maybe another ship (or voyage) would have filled the historical gap. But the chain of circumstance was so perfect that for any other ship to suffer it borders on ASB.
http://history1800s.about.com/od/steamships/a/wreckofarctic.htm