Why did NASCAR change the Daytona 500?

NASCAR is changing how its races work. It used to be that cars would start on lap 1 and when the checkered flag waved, whoever was in first place would win and drivers got more points the better...
Read more: http://www.theverge.com/2017/2/27/14752976/nascar-daytona-500-changes-video?source=Snapzu