I host my clients at WP Engine (and happen to have an agency account that offers 24/7 phone support, among other perks above and beyond the top-level plans). However I have a client that’s interested in the WP dotcom Business plan, which incidentally compares itself to WPE here:[https://wordpress.com/compare/wordpress-vs-wp-engine/])
Looking at the professed specs (see [https://wordpress.com/pricing/#lpc-pricing]) and that it allows a custom theme to be installed with the usual server access, what argument can I make that a managed host like WPE is better? Unless there’s some gotcha about the WP dotcom environment, I don’t see how/why I should persuade them otherwise except to say that my offering has 24/7 phone support.
The client’s theme is completely custom (using Gutenberg with some custom blocks) and uses a handful of trusted plugins. Ordinary brochureware.