If history is any guide, new audit and accounting requirements such as critical audit matters (CAMs), which went into effect last year, could translate to an increase in fees.

Call it the age of the mega merger. Across industries, some of the biggest companies are joining hands and creating even bigger companies.

Kison Patel, the CEO of software company DealRoom, remembers working for a private equity firm trying to do a deal not long ago. His firm bombarded the target company with requests for information — including repetitive requests for the same information, often in Excel spreadsheets. Eventually, the seller got fed up and walked away.

Large corporations are under attack from every corner. A group of states are fighting the proposed acquisition of Sprint Corp. by T-Mobile US. The Department of Justice and the Federal Trade Commission are investigating tech giants including Facebook and Alphabet’s Google for antitrust violations. Democratic presidential candidate Elizabeth Warren is proposing breaking up the big tech companies.