Your statement on copper and it's anti-bacterial properties has merit. It's possible that in the future copper could replace silver as an anti-bacterial metal. But for electronics and other industrial applications, silver will not be replaced. Silver will be needed for electronics, solar panels, and electric cars. You could substitute silver for gold, platinum, or palladium but those metals are much more expensive.
I don't believe that the price can be manipulated long-term. It comes down to basic arithmetic. Around one billion ounces of silver are used in industry each year, and around 850 ounces are mined each year. The price has to rise. So it's not a matter of if, but when.
Zoom in terms of Silver being used for electronics, solar, etc. The first thing to note is that if you look back to the episode when the Hunt brothers tried to corner the Silver market and silver went to $50 per ounce (in U.S. dollars) that a lot of manufacturers redesigned and retooled their products and manufacturing processes to use less silver. Could this happen again if for example silver goes to $100 per ounce? I do not know enough to say. Maybe the efficiency gains have already been squeezed out and maybe they have not.
Secondly Copper is only slightly less conductive than Silver but its a hell of a lot cheaper. Copper is already used heavily in electronics. Silver is much more corrosion resistant than Copper. Now the question is if the Silver price goes high enough will manufacturers consider substituting Silver for Copper and create new methods to deal with the aspects of Corrosion and conductivity? I do not know the answer to that.
Now in regards to your point about Supply and Demand imbalances below I have pasted this table from
The Silver Institute provides leading research on silver supply and demand, including current and yearly data on silver demand, pricing, and production.
You can see from the table below that demand slightly outstrips supply currently but not by much and in many previous years the opposite occurred where the market was oversupplied. Your argument seems to ignore recycled Silver which is wrong because Silver can be recycled many, many times.
The Silver Institute works with the Metals Focus team, a leading research
company that is based in London, to prepare and publish a comprehensive report on the
previous year’s silver supply and demand trends, with special emphasis on key markets and
regions. This annual survey also includes current information on prices and leasing rates, mine
production, silver trade, above ground stocks, and investment.
Material and statistics in this section were adapted in part from the Silver Institute’s World Silver Survey 2022.