What's the use of projectors in star-rated hotels?

Want to give guests a more comfortable experience, the picture is super large, hundreds of inches, does not occupy space, and has strong operability. Unlike the TV set, which is basically fixed in one position, the picture can be adjusted, the hotel room is used more, the projector boot picture can be customized, and the brand effect is better.

The price is generally around 4000 yuan, and the low brightness is not good. I suggest this price. I hope you can help to answer the above questions.