Well, "a few cents" was a bit of artistic license. However, I don't believe the cost is far off from that. The buttons on the maserati radio are really no different than the ones that come on a $99 Clarion radio at Pep Boys. The reason a Maserati radio costs so much is 1. Maserati marks them up 100 or 200 percent or more above what they pay Magneti Marelli for the radio. Magneti charges Maserati a lot more for the Maserati radio than an Alpine would cost because they have to set up production and then just produce a small number of radios vs the hundreds of thousands that Alpine would sell.
That said, once the molds are built, forms and tooling built, etc the actual cost to make 20001 buttons instead of 20000 is very low. I would be surprised if an individual button cost the manufacturer more than a few cents, however, let's splurge and say they cost a dollar each. The point is I can't buy that button for a dime or a dollar or $1000 dollars. The only way to buy it is to buy the whole radio.
The same thing goes for all the other parts that get sticky. The vents cost about $60 at the dealer. I don't imagine Maserati pays more than $15 for them, if that.
Like I said, you or I can't go to the manufacturer of the radio buttons or the plastic piece that goes around the mirror switch or the buttons for the AC and Vent and Sport button. However, Maserati could do it with a couple phone calls to their suppliers.
If Maserati wanted to do the right thing about this problem they would contact their suppliers and order just the parts that get sticky. Not the whole mirror switch but just the sticky surround. Not the whole ventilation assembly but just the buttons that go on the assembly. Etc Etc. Then they would assemble all the parts into a kit that they would sell to customers either at cost or at a reasonable markup above cost. I'll bet that Maserati could easily sell a kit containing all sticky parts brand new for a couple hundred dollars (an probably still make a profit).
Buying all of the assemblies required to replace the sticky buttons from Maserati would cost way north of $10,000.
Normally, if a Maserati part broke you could just go to a junker and get the part there. However, you can't really do that for sticky buttons since if you buy the button used it's either already sticky or will become sticky soon. So, you're stuck.
Anyway, I think if enough customers complained to Maserati it might get them to take notice and put together the kit like I suggest.