I’ve worked with Blazor for about a year. It can be extremely productive for writing real internal business applications. “Backend” people can easily make interactive user interfaces and utilize their C# skills.

I think the threat to Blazor is that productivity in general in organizations is not enough prioritized in comparison to dogmas or current trends. For example that now a days you “should” have a separate front end team and that front end team “loves” technology X (for example React).