Why is that your point or a feasible issue?
It is the club who pointedly made Kane their only choice in replacing Aguero - as Khaldoon stated was a goal and Pep alluded to. Either the club need goals and a no 9 (in which they should have multiple targets if Plan A fails - i.e Dias scenario) or Kane is the only/perfect choice and they believed (falsely) they could get the deal done. The former allows lots of options; The latter was a risk and it didn't pay off for them.
By all accounts, Spurs made it clear early on what the price would be to start a conversation (more than we were willing) and by, Pep's account, didn't enter any negotiations. The morning that Kane tweeted that he was staying, Jack G, one of the most well briefed & connected City journos, wrote that City were still confident. City journos and others on here also stated the high confidence - everything being set up for his arrival. Transfers often fall apart but this was a massive misjudgement of the situation - coming from the same board who misjudged the Super League.
In contrast, Chelsea wanted Haaland realised he was unobtainable at a price they were willing to pay and moved onto Lukaku. Messi went on a 'free' to PSG. Ronaldo went to United (after we flirted). Ings went to Villa. Daka to Leicester etc If goals were the need, there were options; if it's only Kane, then there are not.