Runway excursions are not a trivial issue.
Over the last 30+ years there have been enormous improvements in aviation safety, mainly due to technologies such as GPWS and better understanding of CRM issues. All of the low hanging fruit has been picked and runway excursions have risen to the top of the incident statistics, accounting for a substantial proportion of fatalities.
Only by fully understanding every incident can we make progress in reducing one of the most stubborn causes of accidents.