Answer by taking a quote from the following article:

The Rolling Stones are an English rock band formed in London, England in 1962. The first stable line-up consisted of Brian Jones (guitar, harmonica), Mick Jagger (lead vocals), Keith Richards (guitar, backing vocals), Bill Wyman (bass), Charlie Watts (drums), and Ian Stewart (piano). Stewart was removed from the official line-up in 1963 but continued as a touring member until his death in 1985. Jones left the band less than a month before his death in 1969, having already been replaced by Mick Taylor, who remained until 1974.

Since their formation in 1962, the Rolling Stones survived multiple feuds and have gone on to release 30 studio albums, 13 live albums and 109 singles. According to OfficialCharts.com, the Stones are ranked the fourth bestselling group of all time, with their top single being "(I Can't Get No) Satisfaction", regarded by many at the time as "the classic example of rock and roll." The Stones have also contributed to the blues lexicon, creating their own "codewords" and slang, which they have used throughout their catalog of songs, including some of their more popular songs. The band has been viewed as the musical "vanguard of a major transfusion" of various cultural attitudes, making them accessible to youth in both America and Britain. Muddy Waters was quoted as stating that the Rolling Stones and other English bands enhanced the interest of American youth into blues musicians; after they came to the United States, sales of Waters' albums - and those of other blues musicians - increased with public interest, thus helping to reconnect the country with its own music.  The Rolling Stones have sold over 240 million albums worldwide and have held over 48 tours of varying length. The Stones have also held three of the highest grossing tours of all time, Bridges to Babylon, Voodoo Lounge, and A Bigger Bang. In May 2013, Rolling Stone declared them the "most definitional band that rock & roll has produced," with the Telegraph stating that Mick Jagger was "the Rolling Stone who changed music". The band has been the subject of numerous documentaries and were inducted into the Rock and Roll Hall of Fame by Pete Townshend in 1989. The Rolling Stones have inspired and mentored new generations of musical artists both as a band and individually. They are also credited with changing the "whole business model of popular music."  The band has received - and been nominated for - multiple awards during their 55 years as a band; including three Grammy awards (and 12 nominations), the Juno award for International Entertainer of the Year in 1991, U.K.'s Jazz FM Awards Album of the Year (2017) for their album Blue & Lonesome, and NME awards such as best live band and the NME award for best music film, for their documentary Crossfire Hurricane.

How did they change the business model?