Some systems produce corrupt data, others treat records as inactive. More business problems develop. Many problems with infrastructure occur as computer chips embedded in control systems fail to work properly. The local power company experiences system problems, outages, brownouts, and power surges which wreak havoc on residents and businesses. The first business day in 2000 sees sporadic problems and failures with systems in many businesses, financial institutions, medical facilities, schools, and the local government.
Some companies billing and accounts payable system fail.
Bill collection halts temporarily creating cash flow problems for many. The Dow plummets 1,500 points. Many take capital loss as a result. Investors suffer huge losses, retirement portfolios lose value. Taxable income drops.