Ferguson took a chance on a bunch of youngsters and they clicked. They were hungry for success having been starved for decades. Since then all he has done is tweek the system and use the experienced older players to teach the new ones the style he wants them to play. Its the continuity of management that brings this success. If its not broken, don't fix it, so he will not make huge changes to the team in any one season.
In parallel with ManU's rise was the emergence of Sky Sports. They created and marketed the Premiership and clubs became wealthy, especially those at the top of the pile. Wealthy clubs can splash the cash on expensive players and stadiums.
LFC's system was broken by Souness when he took over. He got rid of the boot room and made big changes in the squad very quickly thereby upsetting the balance. He broke it and then couldn't fix it.
Ferguson will retire soon and if we are lucky Souness will go back into management and will become the next ManU gaffer.
