None of us know how a football club at such a high level is run. That's why I brought Madrid as an example. If such a rich and successful club doesn't bring replacements for their key players in defense then maybe we shouldn't be so harsh on Juve either?
You forgot one important factor - Madrid win in spite of their struggles. We continue to struggle, and somehow get worse.
Madrid, last time I checked, are 15 time CL winners, and last won La Liga in 2023.
They can afford to be (somewhat) patient because they've never really failed (only in 2020 if recent memory serves). Their standards are incredibly high that if they don't win La Liga and the CL, the season is considered a disappointment.
We've been starved of success for 5 years. We were close to the pinnacle, but we have plumetted at an alarmingly fast rate, with no end in sight. Our demise began with the constant downgrades after selling both Vidal and Pogba: the acquisition of Ronaldo only exacerbaed the situation and Covid compounded it.
You can't build a winning team without consistency, and that consistency must be a shared vision between ownership, management, coaches, physios, the medical team, the players, and the fans. It also involves retaining your best players, not chopping and churning. Do you see how a Sfinter with no money has managed success over the past 5 years? Balance and retention of their core. They haven't sold Lautaro, Barella, or Bastoni. Their key cogs are still there. We need to identify our key cogs and build around them, complement them with quality players and personalities.
The bottom line is, we wouldn't be so harsh if there was a clear vision/strategy and the improvement was visible. So far, our play is insipid, our coach is asinine, our sporting director is a buffoon, and the performances do nothing to absolve anyone, and everything is magnified tenfold because the results are abysmal.
This is Juventus, not some high school experiment. If you can't handle the pressure or deliver, GTFO! It's that simple.