If there's a legitimate demand that will be used, then there's a good case for production to be increased to meet such demand, and all parties who need something would have their needs met.
At no point to scalpers make this system more efficient – they just serve to extract a greater profit from consumers and businesses for their own benefit by the aforementioned artificial scarcity that they make. This is also known as cornering the market, a well-known and despised practice that has been frequently used by morally corrupt individuals who sought only to benefit themselves. Nowhere can nor should the argument be made that scalpers help anyone but themselves.