It is not just Dell and capacitors, all the companies at that time did it (tried to hide the problem) and all the companies try even today to hide any problems

It is not just Dell and capacitors, all the companies at that time did it (tried to hide the problem) and all the companies try even today to hide any problems with their products. With Dell computer failed, with Boeing planes crashed, some problems are widespread but not too dangerous and some are extremely bad (example: Takata airbags). There is a financial incentive to hide the problems under the rug and the skeletons in the closets, especially in the USA where you can buy your way out with a settlement and not recognizing any fault.