Why are static indexers disallowed in C#? I see no reason why they should not be allowed and furthermore they could be very useful.

For example:

    public static class ConfigurationManager 
    {
            public object this[string name]
            {
                get =&gt; ConfigurationManager.getProperty(name);
                set =&gt; ConfigurationManager.editProperty(name, value);
            }
    
            /// &lt;summary&gt;
            /// This will write the value to the property. Will overwrite if the property is already there
            /// &lt;/summary&gt;
            /// &lt;param name=&quot;name&quot;&gt;Name of the property&lt;/param&gt;
            /// &lt;param name=&quot;value&quot;&gt;Value to be wrote (calls ToString)&lt;/param&gt;
            public static void editProperty(string name, object value) 
            {
                var ds = new DataSet();
                var configFile = new FileStream(&quot;./config.xml&quot;, FileMode.OpenOrCreate);
                ds.ReadXml(configFile);
    
                if (ds.Tables[&quot;config&quot;] == null)
                    ds.Tables.Add(&quot;config&quot;);
    
                var config = ds.Tables[&quot;config&quot;];
    
                if (config.Rows[0] == null) 
                    config.Rows.Add(config.NewRow());
    
                if (config.Columns[name] == null) 
                    config.Columns.Add(name);
    
                config.Rows[0][name] = value.ToString();
    
                ds.WriteXml(configFile);
                configFile.Close();
            }
    
            public static void addProperty(string name, object value) =&gt;
                ConfigurationManager.editProperty(name, value);
    
            public static object getProperty(string name) 
            {
                var ds = new DataSet();
                var configFile = new FileStream(&quot;./config.xml&quot;, FileMode.OpenOrCreate);
                ds.ReadXml(configFile);
                configFile.Close();
    
                if (ds.Tables[&quot;config&quot;] == null) return null;

                var config = ds.Tables[&quot;config&quot;];
    
                if (config.Rows[0] == null) return null;
                if (config.Columns[name] == null) return null;
    
                return config.Rows[0][name];
            }
        }

The above code would benefit greatly from a static indexer. However it won&#39;t compile because static indexers are not allowed. Why is this so?

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Static Indexers?