You can, but the debt generally comes due in a timescale of days. Running your team into the ground might be a useful strategy in a situation of "we have to have something to ship by nine a.m. next Monday morning or the company goes bankrupt," but situations where that's actually true are extremely rare. Trying it in the more typical case where the deadline is e.g. three months away will at best stretch three months work out to four or five months.
A scenario that does actually happen now and then is "the system has gone down, we don't know why, and there'll be hell to pay if we don't find the bug, fix it and get everything back up and running by Monday morning." In that case, fine, work the weekend if you have to - but then take Monday and Tuesday off.
I don't think I will trust you on that until you have built something, in a fierce global competition, ends up being used by hundreds of millions of people. Perhaps you have?
(I have.)
Again, after that sort of experience I would be glad to discuss this.
A scenario that does actually happen now and then is "the system has gone down, we don't know why, and there'll be hell to pay if we don't find the bug, fix it and get everything back up and running by Monday morning." In that case, fine, work the weekend if you have to - but then take Monday and Tuesday off.