David Coulthard has admitted that seeing two of his former teams struggle is both “confusing and disappointing”.
Meanwhile, Williams sit rock bottom of the standings with just three points scoring finishes from their two drivers.
Coulthard believes that both teams need to reinvent themselves and start over if they are to return to the top.
“It’s confusing and disappointing to see the difficulty they have gone through,” Coulthard said.
“Success comes from the people, not the name on the door. It isn’t self-sustaining.
“It is all about the people involved at any given period.”
The Scot, who won 13 races during his career, believes that young talent is needed.
“Clearly, both those teams have not been able to energise, reinvent and attract young talent and that is what they have to focus on,” he added.
“They need to change the structures they have in place and bring in the young talent. That is where the energy comes from.”
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