Not really. Most people continue to remain in a specific domain from their internship days, and professional networks develop.

Historically, startups were the traditional path for a generalist to build domain expertise because most startups couldn't be picky with talent, but the market has changed.

In all honesty, too much fat did develop in the tech industry over the last 6 years. Traditional hiring pipelines (eg. Limiting early career recruiting to grads from top 10-20 CS/ECE/EECS programs nationally along with Vets and some grads from decent regional programs) still net good calibre talent worth their weight in gold, but others just aren't working out.