When you need to make changes because what is there is not working out. And you trade for a possible future QB. And can fix the cap at the same time.
You take that chance.
I love making the playoffs every year. But I do not like losing in game or or rarely in game 2 of them every year.
You don't fix the cap if you trade for a "possible future QB."
If that guy is good you've a) given up a ton of draft capital and b) have to give him a market-setting contract anyways.
Jordan Love has a tiny body of work and just got a massive, massive deal. Kirk Cousins is 36 years old, coming off a significant injury and got a massive deal and the organization believes in his future so little they drafted a QB in the top 10 lol.
There is no such thing as a cheap, winning QB.