Ross Brawn can understand the "dilemma" facing Mercedes as it comes under the severe threat of being dethroned as F1 champion by Red Bull.
Mercedes is on its worst run in the turbo-hybrid era as Red Bull has won the last five grands prix - with Max Verstappen claiming four of those victories - to take a firm grip on the constructors' and drivers' championships.
The Brackley-based team has already spoken about the difficulties in developing the W12 as it tackles not only the budget cap for the first time but also attempts to build the all-new cars for 2022.
With Hamilton's hopes of securing a record-breaking eighth world title ebbing away at this stage, F1's managing director motorsports Brawn said: "Right now, things aren’t going well for Lewis but he’s been through this before, albeit maybe not for some time. He is used to tough battles.
"This year is unusual in that the teams can’t respond in a normal way for several reasons. One is that we have the cost cap now, so they can’t just throw resources at the problem.
"Secondly, we have the new car coming in next year, which they will be pretty committed to, so it’s a bit of a dilemma for the team as they probably can’t afford to deliver a very strong response in the way they normally would do.
"Before the cost cap, you would throw resource at it. These are the elements of the rule changes that have been made, which are significant and slightly unseen and I think will lead to stronger championships in the future."
Hamilton "a key ingredient" for F1
While declaring the titles are "still reachable for Hamilton and Mercedes", Brawn is at least delighted the 36-year-old has opted to stay in F1 for another two years.
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