This has made it much harder for broadcast stations to profit from children's programs than was possible in previous years, eventually leading the major broadcast networks to abandon traditional scripted programs in favor of unscripted educational series with formats appealing to a more generalized audience to fulfill the requirements; noncommercial networks are exceptions to this new standard, as PBS in particular has long excelled in providing E/I-compliant children's programs that mix educational and entertainment content (such as "Sesame Street", "Mister Rogers' Neighborhood", "Thomas the Tank Engine" and "Arthur").