Why are songs shorter now?

(NEXSTAR) — It's not just you — the songs you hear on the radio or stream on your favorite music app are shorter than they used to be. Historically, popular songs aimed to be at least 3 minutes long, a guiding principle known as the "3-Minute Rule."
This goal length dates back to vinyl records, when artists hoped to have at least 3 minutes of material to fill out a 45 rpm disc, also known as a "single." As explained by Vox, singles were cheaper to create and cheaper to buy, so artist