So, if you move away from monetary policy, further limit debt-fueled growth, embrace foreign exchange intervention, build barriers to your banking system in terms of a policy of financial containment, how do you compensate for spending issues? You get government to pick up the tab! It's beginning to sound like the New Deal...
One reason why public sector debt-to-GDP ratios have been increasing at the global level is precisely the asymmetrical use of fiscal policy, increasing deficits during contractions but failing to consolidate during expansions. Hence the reduced room for policy manoeuvre compared with precrisis. But the most important set of policies is structural. Hard as it is politically, it is essential to revive the flagging efforts to implement policies designed to boost growth.
Some government spending is, of course, necessary. If we did everything in the name of profit, we wouldn't have a lot of things like roads, parks, community centers, emergency response, and so on. However, using government borrowing and spending capacity will only get you so far. Who's gonna bail out the government when it goes bust?
If you believe in the BIS's recommendations, start reining in monetary policy, curtailing debt-fueled growth (rather than directing debt toward the right places), embracing currency interventions, restricting cross-border finance, and then, start unloading the government's checkbook, the strategy eventually works against itself. What the BIS is advocating for is just another boom loop.
Putting up borders on finance also impedes the economic autonomy of individuals - a core principle of western liberal democracy. Maybe, the BIS is not on-board with those values or doesn't realize the impact its recommendations would have on the political fabric of western societies. But that's a loaded thing to think about.
An alternative to all of this, is to enhance the focus on monetary policy and debt-fueled economic development. Prime the private banks to do the heavy-lifting in the form of lending-as-a-public-service, and get the central bank to bail them out when they go bust after heavily competing against each other. What ought to be done is, together with the finance ministry, the building of strategic economic development plans, while making monetary policy officials and private bankers accountable to elected politicians. This way, you get economic development through the use of credit - a near-magical human invention - and in turn keep taxpayers and public budgets healthy in the green.