It is done!

EllieHub/Extensions/IServiceProviderExt.cs

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+using Microsoft.Extensions.DependencyInjection;
+
+namespace EllieHub.Extensions;
+
+/// <summary>
+/// Defines extension methods for <see cref="IServiceProvider"/>.
+/// </summary>
+public static class IServiceProviderExt
+{
+    /// <summary>
+    /// Gets service of type <typeparamref name="T"/> from the <see cref="IServiceProvider"/>.
+    /// </summary>
+    /// <typeparam name="T">The type of service object to get.</typeparam>
+    /// <param name="serviceProvider">The <see cref="IServiceProvider"/> to retrieve the service object from.</param>
+    /// <param name="arguments"></param>
+    /// <remarks>Do not use abstract types in the type argument!</remarks>
+    /// <returns>A service object of type <typeparamref name="T"/>.</returns>
+    /// <exception cref="ArgumentNullException">Occurs when <paramref name="serviceProvider"/> or <paramref name="arguments"/> are <see langword="null"/>.</exception>
+    /// <exception cref="InvalidOperationException">Occurs when there is no concrete service of type <typeparamref name="T"/> or when the arguments are wrong.</exception>
+    public static T GetParameterizedService<T>(this IServiceProvider serviceProvider, params object[] arguments)
+    {
+        ArgumentNullException.ThrowIfNull(serviceProvider, nameof(serviceProvider));
+        ArgumentNullException.ThrowIfNull(arguments, nameof(arguments));
+
+        var result = ActivatorUtilities.CreateInstance<T>(serviceProvider, arguments);
+
+        return (result is null)
+            ? throw new InvalidOperationException($"There is no service of type {nameof(T)} or the arguments were incorrect.")
+            : result;
+    }
+}