Any government can live forever without restraint on expenditure...

Any government can live forever without restraint on expenditure as long as they raise the revenue to cover that expenditure.
Which government loves rampant inflation? last time I looked governments were targeting an inflation rate of 2% hardly rampant
Capitalism works best with a small level of inflation because its a disincentive to hoard cash.
The famous examples of hyper inflation Weimar, Hungary and Zimbabwe were all the results of wars.