✒ The answers according to The Economist:

  1. Companies that reduce inefficiencies, from the management of company expenses to the reconciliation of business payments, and thus ought to help companies cut back in more difficult times.
  2. Firms that create new revenue lines for their clients, such as enabling a travel agent to sell their customers insurance.
  3. Financial plumbers, from firms providing data or ones dabbling in crypto to those that help banks comply with sanctions.

These conclusions circle back to the holy grail in business: Increasing revenue, reducing costs, improving efficiency.