Personally if I get an offer I’m happy with, I accept it. If not, I either decline or negotiate. But if I was in a position where the worst possible outcome was me not getting the job at the current offer, I’d accept it.
That friction translates to leverage. If you don't open up with "I wouldn't boot up my computer for any less than twice your offer", then there's negligible chances of the worst case scenario not being their initial offer. Personally, I like to try and use PTO as an opening point in negotiations. Companies hate giving out PTO, I don't know why, but it's seen as a soft-blocker. Something like "I've looked over your offer, and it's pretty compelling, but it's a bit below market rates. If you could add another week of PTO, or another 15% comp I could sign today". Every time I've done this I got the vast majority of the money (but never the PTO, which I would be just as happy for).
But my point was if you are in a situation where losing the offer is disastrous (you’re not working and running low on funds, for example) then in my opinion you should just take the offer. Because even though the risk of an offer getting revoked is low, it’s not zero.
But they have a phone number that I was given and I can call them whenever I need to convert currency worth more than €20k. The rates are much better, and they get almost mid-market by the time you ask them about €100k+ numbers.
The number has no waiting music, it rings, trader picks up and deal is done and money has been exchanged in my account in less than a minute.
Point is, I'm not negotiating with the bank teller, they have a flow chart they need to follow. For a lot of positions with big companies, it's going to be the same. There might be a path on the flowchart you can access, but you're not really negotiating. In some cases you may be able to break though this if there's a real person (not recruiter) that will push for you, but talking to recruiters / talent is like talking to the bank teller.