In some ways that is true, and in others that is not the case. For JSON support, PG really did lead the way as far as RDBMS' go. Things like range types are something I wish MSSQL supported when I used it at my day job.
Re:PostgreSQL 11 Released
by bunderbunder on Thursday October 18, 2018 @02:48PM
(#18251022)
And plenty more that PostgreSQL will probably lack for the foreseeable future. Especially at the more expensive pricing tiers.
But I'm not sure it's a fair comparison, precisely because of that word, "pricing". It's amazing what you can get people to do when you're paying them big bucks to do it. Part of what makes PostgreSQL so impressive is what it does given the budget it's working with.
Definitely not true. Postgres development is slow, deliberate, and the opposite of cutting edge. It's what has lead to a great platform that is reliable and flexible, but every single commercial database out there has far modern tech implemented.