Drop in start-up prices to spark a mergers and acquisitions revival

More reasonable valuations will force investors to take offers more seriously, writes Alistair Barr

Big tech firms are re-entering the M&A marketiStock

David Drummond has a simple explanation for why Alphabet, one of the more acquisitive technology companies, has been sitting on its hands for more than a year.

“Have you seen the valuations?” Drummond, the corporate development chief for Google’s parent company, said in an interview after the Alphabet annual shareholder meeting on June 8.

That’s about to change as stratospheric start-up valuations fall to earth, luring Alphabet and other big technology companies back ...