Since the release of seventh album, Megadeth had moved away from his usual fast-paced music, all because Dave Mustaine wanted to make the band more famous and successful on the radio, so he tried to the style and context of the new works bring Megadeth closer to radio music, and the success of the seventh album in this regard made Dave Mustaine more determined to advance this strategy, and also helped to widen the gap between the new albums of the group and their old fast music.
In the seventh album of the band, which can be said to be the beginning of this path Old fans of the band can still find audible tracks and the song the vortex is an example of them, but in 1999 Megadeth released an album of which no trace of the fast music and the unique atmosphere of the old Megadeth can be found.
Source : https://www.amazon.com/Risk-Megadeth/dp/B0002EXH5E
Paul Gargano, a veteran of the music industry, talks about this album: "the Risk was really a risk and I don't think it was as good as people expected and it was a lot more pop (close to popular music) than metal and I think Dave Mustaine expected that with this model of music he could succeed on the radio. earn more, which did not happen."
Dave Mustaine says about that: "We knew before it was released that it was going to be either a normal thing or a big scandal."
Marty Friedman: "I was very interested in pop music at the time, and in fact I'm not a big fan of heavy metal and thrash and the reason I left the band at that time was because I was no longer interested in the music we were making in the band, which the other people in the band thought was better for the band to make this way.I spent a lot of time with the band and made songs, but lately I feel like I've become an autopilot button."
Source : https://www.quora.com/Why-did-Marty-Friedman-leave-Megadeth
David Ellefson: "Marty talked to me about it and I jokingly told him: Well why haven't you been left yet? and he said: "I don't know, I just don't want to make that kind of music anymore."
Marty: "I had to go and my decision was purely artistic and did not require personal problems, and I came to believe that my abilities were never used and that 2% of my abilities were used in each album. you know, in Megadeth, you can have a very colorful palette and play heavy metal music that you can paint with any color you want."