You're forgetting the popularity of cheap shared hosting plans. PHP is offered on many hosting plans for $10 or less dollars a month and "just works" in that y

You're forgetting the popularity of cheap shared hosting plans. PHP is offered on many hosting plans for $10 or less dollars a month and "just works" in that you upload a PHP file and it works with zero extra configuration. Most cheap hosts don't offer this low barrier to entry with Python, ASP, ASP.NET, RoR, etc.