I'll answer this in two ways:
Scenario 1) if i was am ambitious owner i'd almost certainly not have hired him in the first place as i'd have aimed higher. However, let's say i had hired him AND was ambitious i'd likely have saw how we finished 5th from being in a good position to get 4th but had fallen away badly and would have backed him more last summer. If i had done that, then he'd be in last chance saloon if Ange was still performing like he is now. As in, if no upturn in results by end of February then i'd be thinking of sacking him (and i wouldn't necessarily buy big in January as i'd have backed him last summer so would want to see the fruits of that labour first)
Scenario 2) In the current situation i think the owners would want to sack Ange because we are getting progressively worse in the 'big games' and also against the 'middle team' games. I'd have less and less to hang my faith on: very little tactical chess in said big games when you're up against opponents with similar or more resources. Under previous managers you saw at least some times when it would be a game of chess and we'd make the sum of our parts greater than the individuals, whereas this seems an alien concept now. However, i don';t think the owners can stomach doing that because it would just expose them more than ever: how they got to hire Ange in the first place (i'm sure he wasn't even their 2nd choice) and how they didn't really back him in the summer when the chips were down (probably, a lack of faith) and then the questions of their football knowledge/priorities open for discussion again...
Any other scenario, i think Ange would be a few games from being gone. He's performing less well than Nuno given Nuno had far less time
Mate, people are trying to engage you seriously
- No need to be snarky with the "if I was an ambitious owner", Levy/ENIC are, they have hired the best managers in the world, they pay some of best management salaries in the world, Poch, Jose, Conte (how much higher were you going to go? and I can just imagine your reaction if we went for Chelsea's manager?), they tried for Slot, think Amorim was in conversation as well, Nuno in hindsight wasn't the brick decision fans decided to make out. That is a different conversation than the self funded squad concerns.
- He got backed in summer, can we stop this brick? because you don't like the players Ange choose, or the the prioritization he made (everyone has a finite budget), does not equal he wasn't backed. Less than 5 days ago in a presser he was clear, he could have got another established player or two, but it would have meant potentially missing out on long term talent like Gray. His must have was Solanke, he got it.
To be serious with your questions
- The decisions to prioritize signings like Gray, Bergvall, Yang, commitments to Moore, Vuskovich to me always said this wasn't "for this season"
- The club (finally) has realized the squad needs an entire rebuild, we are about 2 years into, probably at least another 2 windows to see the full outcome
- Ange is a complete system manager (somewhat like Conte, his fudging midfield could only work with Bentancur), until you have the full team the results can be worse than sum (see Pep as ultimate example)
- These owners don't fudging care about egg on their face, they will fire managers (BMJ, Poch, Jose before a final), whenever they want.
To what I agree with/speculation
- Normally a Spurs manager in bottom half at Christmas would be gone, so why is he still here? 1/Still in all the cups (I think it's a big part of what's keeping him in role, and see second point), 2/Our best games show a ceiling we haven't seen in a long time, mutli-goal wins away against City, United, Villa, etc show when it works
- The bottom isn't endless though, in my opinion he's probably got until end of season, but stay in bottom half until February, will change.
- Ange also has to be telling the club internally a different story than his press conferences, conceding 6 or 7 goals is a very quick route to job loss at Spurs, he has to be convincing someone that there is adjustments, that in future we will learn.
Personally, the club has been extremely patient with Ange, it's up to him now to ensure the season doesn't keep unravelling, if it does and he loses his job it is on him, 100%. I still think January window will be an interesting insight into how far the club still believes in him.