Im not disagreeing with you Fred its fine to use historic icons but not ones where so many people died. Surely it would be more respective of their peace and their families to make a new cruise boat. if hes a billionaire surely he could make a ship to compete with Oasis of the seas in size and fame, especially since that hasnt sunk.
So many people died? Compared to what? World War One? World War Two? Any other war, Other more costly shipwrecks or disasters? Titanic is by no means a high death toll event compared to the much worse events in our history.
Have you not seen that there's tons of things that we have made into commerce, from anything well-known in the past, everywhere all the time?
War movies, disaster movies making millions at the box office, museums full of things to do with death and suffering in the past, theme parks with rides or attractions based on some such things, heck any idea how many people visit mount rushmore every year and pay lots and lots of money to get into the park, to buy souvenirs.. and that's basically, partially a 'monument' to the destruction of a whole people, the native North Americans, if you really think about it.
Remember, it's not REALLY the titanic that they are building. Now if they would somehow make an underwater-dome theme-park on the seabottom right on the actual wrecksite and thus gravesite, then I would fully agree with you. But this is just a brand-new lookalike boat, not really even connected to the deceased. And their relatives have accepted their demise by now, I can pretty much guarantee you that. After all the papers, books, documentaries, movies and what not over the last hundred years, they won't really be too upset about people taking rides on a floating museum/hotel.