LH offers this program since decades with two options of a combined program with aviation major or just flight training program, and as I know, their program is based on MPL, not ATPL. However, they are right now changing the whole concept of the program, the boldest one being it will not be financially sponsored by LH anymore. As I know, they have currently dozens of cadets finished training but still waiting for a job from LH and again dozens of candidates who have succeeded the assesment and ready to start training. Some of the cadets finished training have been transitioned to Germanwings.
KLM, British and Air France have their own ab-initio programs as well as I know.
Turkish hires more cadets every year, recently they bought a whole airport in Southwest Turkey and asked flight training department of Florida Institute of Technology to set the place up. They are still sending some of the cadets to FIT and some other schools in Europe. The program is completely sponsored by the airline including the accommodation and cadets receive a small scholarship-kind salary during the training.
The case of Turkish seems to be a dream for a US airline, however I don't see any reason it would not succeed. Turkish is relatively new in this game, (around 10 years) but LH has been doing this for decades.