Is there better course selection in large, research-based Ivy League schools, and do these schools attract more skillful faculty members?

While it’s true that bigger schools offer a more extensive course selection, there can sometimes be limited availability attached to this due to the high competition that these said courses attract. Focusing on faculty, numerous prominent scholars at major universities sometimes get busy doing research and/or publishing books outside of the classroom, and as a result they are not able to spend much time on teaching. The goal of all universities is to have published, professional professors who are skilled at both teaching and research.