That is not the case. Bacteria can and do develop resistance to silver just as to antibiotics. For anyone interested, the resistance genes encode a silver ion binding protein and efflux pumps (i.e., the silver is bound and then sent out). Silver resistant E. coli and other gut bacteria are frequently found in silver-treated medical equipment such as catheters and bandages.Should be...FDA fears growth of resistances to certain substances but the 3D-Surface sounds more like silver in it's properties to which bacteria just can't develop resistances.
Adding silver to everyday items only makes the resistance problem worse, and this is no exception.