A 65-inch image is almost twice as large (84%) as a 48-inch image and 40% larger than a 55-inch. Really big.
The larger the image, the more cinematic and immersive (present) the atmosphere. The size of the image is even more significant in terms of the sense of presence than the subjective quality of the image. For this reason, many also end up with a video projector, even though its image quality is not up to par with television and requires a darkened room.
More and more consumers want bigger TVs. And sizes have grown over the years. Once upon a time, a 32-inch TV was considered a real giant (that's 30 years ago).
As flat-panel TVs replaced CRT technology, the screen size also began to grow: 42, 48, 55 inches... And as prices fell, they got bigger and bigger.
Now 65 inches is starting to become the "standard" size for a television, which is really big.
And why should you pay more?
Inexpensive televisions often have a good price-quality ratio, because they offer enough features for most people's basic needs, and the picture quality has long been good even in inexpensive televisions, and it's only getting better.
Mass production and competition drive down prices. Inexpensive models use technology that is already in place in more expensive TVs. Brands compete for market share. Retailers compete on equal terms. This competition benefits consumers with lower prices, more features, and better quality.