I suspect this is not ever going to match the efficiency of a good team with history.
In the US, that could mean a number of 1099 employees instead of the normal W2. Possibly long-term contracts would become the norm. Much of this would be the employer pushing the cost of employment onto the employee.
Also, I'd imagine that there are several examples where having a good team with a history is not much of a consideration. If you have access to enough people in the field in your area that have experience, it most likely would not be difficult to ramp up a good team that can suit your needs quickly. Professionals tend to be professionals.
The obvious alternative is to maintain a group of people that have developed a good working relationship together for a longer period of time. Of course people would come and go occasionally due to other opportunities & changing needs for skills. But wait - that sounds an awful lot like what we already have.
Of course no one knows the future (maybe lifetime union jobs will be back in 30 years?) but I just feel this is the way the wind is blowing. But then again maybe it's just where I'm standing.