Mergers and acquisitions in the public relations industry are likely to be frequent in the next few years as publicity firms with digital know-how find buyers. Almost all (92 percent) of respondents to a recent survey of independent PR firms said they have been approached by a potential buyer in the past two years, while more than half of firms (54 percent) said it was “likely” or “very likely” that they would sell by 2021, according to law firm Davis & Gilbert.