Design Master Software each year surveys MEP [mechanical, electrical, plumbing] designers about their use of BIM [building information modeling] software, which in this survey means Revit -- although "bim" was not defined so that respondents could apply their own definition. Since the survey began back in 2010, the annual results are now able to show a decadal trend.
The decadal trend reported by Design Master is this: that the use of BIM has not changed greatly over the last ten years, and respondents appear to be using it less for some purposes, contrary to predictions that BIM usage would, in general, increase.
The survey does not examine why Revit use is declining. Could it be due to firms discovering alternatives as Revit development stagnates and the cost of using it increases?
Now, be forewarned that the survey sample size is just 85 and respondents are only from USA and Canada, which is small against a number like the 118 firms worldwide that signed the "Rage against Revit" letter. The size of the surveyed firms does, however, cover a wide range, from single-person firms to ones with over 200 employees.
Here is a summary of results from Design Master:
BIM is being used less in 2019 than had been predicted by respondents in 2016.
The most popular use is generating construction documents.
In second places are BIM being used for 3D collision detection (somewhat less use over the years), Revit-format deliverables (falling steadily), and automated design/calculations (up over the years).
AutoCAD and Excel are used a lot to supplement BIM software, although they were the only two alternatives quizzed about.
Most firms do not charge more when required to use BIM; the exceptions are when they are required to use 3D collision detection or deliver work in Revit format.
For the full details and charts, see designmaster.biz/blog/2019/12/mep-bim-2019-survey-results