> Why PHP continues to thrive in the age of the PaaS
Most companies/clients, particularly outside of the SV/SF bubble, value a working solution over technical elegance. They're not irrationally ideological about programming languages, and they don't want to pay $120,000/year or $125/hour to a developer with two years of experience.
Given the supply of developers of various skill levels who can build working solutions using PHP, and the number of existing commercial and open-source applications based on PHP, it's no surprise that PHP is thriving.
> But the question is, why should PHP still be easier to deploy than Ruby/Rails, Python/Django, Node/Express (or Metro)?
It's interesting that the author grouped Ruby, Python and Node with frameworks for his comparison to PHP sans framework.
Incidentally, I think one of the advantages of PHP is that a lot of PHP developers, especially those who have been working with PHP for some time, didn't get started with a framework. Heck, before there were mature frameworks, many PHP developers rolled their own frameworks and micro-frameworks, a valuable exercise.
Third party frameworks are great, but they can easily become a crutch, and when you don't know anything but the framework, they can be downright dangerous.
What percentage of Ruby on Rails developers who started their careers with Ruby on Rails are capable of building a moderately complex Ruby application without Rails?