In 2018, Robert Walters Inc., a multinational recruitment agency conducted a salary survey for key sectors in the Philippines such as accounting/finance, banking/financial services, human resources, sales/marketing, and technology. The 2018 report revealed that salaries continued to rise by 20 percent for those who sought or moved to jobs in these sectors. These jobs specifically catered to mid to senior level candidates. Careers in technology gets the highest salary raise. Those who moved to this sector received a rise of 20 percent and it is expected to be 30-60 percent in the next few years. This is true for those with experience in analytics, robotics, and automation. Sales and marketing jobs are also expected to command higher pays than the average 20 percent if candidates have extensive background in digital or e-commerce, start-ups, and working in an international environment. Those who sought careers in human resources got 20-25 percent increase in salaries and it is expected to continue in the next few years. This is especially for those who have adequate experience in change management and technology-driven HR processes. The average rise of 20 percent in 2018 for job movers in banking and financial services will continue to rise, specifically for audit, risk management, anti-money laundering, and financial crime compliance. The same goes for accounting and finance. The increase will continue especially for those with background in audit and taxation 

What is the primary reason for the rise in salaries for job candidates of the sectors mentioned in the article?

How will the companies affected by the continued rise in salaries respond?