Today, culture is very different than how it used to be less than a decade ago. What we considered as a form of entertainment back then is considered to be dated and obsolete now. One look at the movies that are being made today will convince you that Arts and Entertainment are a continuously evolving entity and seldom remain the same.
In fact, people have varied perspectives on this subject and seldom agree on one single thing. They are usually very particular about is considered to be a good form of entertainment and will seldom vary their opinion over time.
Ironically, as newer generations enter this world, there will once again be a shift in the meaning of the two terms. What is interesting is that regardless of what might be truly considered as Arts and Entertainment today, will continue to remain so for a long time to come.
In fact, people might remember our times with the art that we produced during this period. It has been the same fundamental for years together now, like how we remember the ancient civilizations with what they had made several hundred years ago. People might come and go, but the art remains for years together.
Hence, one should take time in appreciating these things. If the world was all about science, we would have been very different beings. It is the art aspect that differentiates humans from machines and the minute we stop paying attention to that, we are no different than our vacuum cleaners.