Depends on what you mean by making it work. Growing gdp yes. That’s probably the only way.

But a lot of other things could have been done. Build a shitload of houses and forces businesses to do more on the job training and move to low employment areas could have had a huge huge impact. But this absolutely would have had to be tied to low immigration to have worked.

It would have decreased gdp or stopped it growing as much but people would have more jobs, more discretionary income and better living situations. Personally I think that’s better than increasing GDP.