Their primary use is for the Holy Sacrifice of the Mass. With all due respect, that is a fact that seems lost on a few people in this thread. These are not made for profane use. Again, with all seriousness, would you use a golden chalice and a paten at your next dinner party? I would think not. Furthermore, you cannot sell something that is blessed. That would be committing the sin of simony.
They don’t come from the manufacturer blessed! No one is talking about selling blessed items, but unblessed items – that’s the entire point! Do you think that every parish in the world is complicit in the sin of simony? Because it is either they or a patron who pays for these items – the manufacturers are certainly not donating them.
Also, throughout history many people would indeed use golden chalices and dishes for dinner. I can see even today those with means using such items (though, maybe European royalty or other such wealthy people).
Do you think the wonderful people who bring us quality entertainment in the form of films such as
Karol: A Man Who Became Pope'', Therese’’, etc., etc. are all complicit in sin for their non-liturgical use of these liturgical items (these films depict scenes of priests in vestments performing liturgical acts).
The items used in Liturgy traditionally were items from the community set aside for liturgical use. Chalices and ciboria were top of the line dinnerware, vestments were top of the line clothing, candlesticks, etc. All were more-or-less everyday items set aside for a singular purpose, but without that setting aside would have been used in everyday life.
When during the manufacturing process does this setting aside actually take place, according to you?
If these items are already set aside for sacred use, why then do they need to be blessed or consecrated? For the items to be consecrated before their liturgical use would be redundant if they came from the manufacturer already sacred.
Once more, it is the consecration and blessing, and nothing else, that sets asides anything (whether liturgical item or person) for the exclusive purposes of God.