It is going to take a lot of sales to recoup that investment in a reasonable amount of time, which would be challenging enough in good economic times, but in today's worldwide economy, this will be doubly difficult. In addition, with OLED competing with much lower-priced LCD and Plasma TVs that consumers are generally satisfied with, and the introduction of large screen 4K TVs that, if you take screen size into account, are actually less expensive to produce and sell, it is certainly going to an uphill battle for OLED TV.
Also, the other elephant in the room may just be Apple with its much anticipated (but yet to materialize) iTV.
However, LG appears to be confident that it is on firm ground fully embracing OLED as the future of TV technology, and also desiring to maintain its current lead over Samsung, Panasonic, and Sony in this arena. For additional details on what may lie ahead for OLED TV, read the analysis from HD Guru.