Whither professional services?

Boulder and surrounding communities always seem to bounce back from economic setbacks. A diversified economy means that even as one sector might contract, others might expand. And the region has seen waves of Big Tech companies emerge to snap up vacant space or build new facilities. (Think Google, Twitter, Apple, Microsoft, et al.)

But several recent losses point to the need to avoid complacency, especially in the critical professional services industry, which includes law firms, accounting firms, architecture and other disciplines.

Here are some of the losses over the past year:

• OZ Architecture, which had long maintained a Boulder office and one…