Yes. Go back to US/Canada, maybe EU. Depends on the offers.
Not much point in staying on a sinking ship. And thats a problem for the UK
When people in the £100k+ bracket start jumping ship abroad (professionals, Drs, Investors, Entrepeneurs etc) they take their taxes with them, which makes the UKs situation even worse.
Even if you made all the correct choices, it would still take 10-15 years to stop the ship from sinking. The country would then rebalance at a lower real GDP per capita. Standard of living would take a hit. In effect, the country would be about 20% poorer relative to the EU. Slovenia and possibly Poland will come out wealthier.
Rees-Mog is an 18th Century ass of epic proportions, but when he said "we will see the returns in 50 years" he wasn't being sarcastic. People like him know the truth, but they continually lie to you.
The UKs main failing that I have been able to see over the last 30 years is the toxic levels of nationalistic boosterism that have been allowed to build up. Problems are avoided in favour of "feelings", and when those problems become large, you tend to implement only short term sticking plasters using political expediency.
Rinse and repeat over 30 years, and the UK has become a terrible country to live in for the great majority of its people.
The grim reality is you did this to yourselves but keep choosing to blame "others".