maybe "they were successful in a period that comes quite close to where we are now"? People forget that success is not an immutable attribute - it is the sum to

maybe "they were successful in a period that comes quite close to where we are now"? People forget that success is not an immutable attribute - it is the sum total of hard work and decisions that are put in every week, every month, every year, over a longer period of time. But as much as it is the product of a longer period of time, success can wax and wane throughout the decades and a company can be wiped out or acquired on less-than-favorable terms if they fail to adapt to the next large-scale change in the industry.