Companies have many ways to finance themselves as long as they own assets. And reported financial losses include "non-cash" expenses like depreciation of assets already paid for, amortization of patents, bad debt exp, ect... ect... . Thats why cashflow is much different from profit/loss
Large companies with billions in assets can sustain themselves through several years of large P&L losses, but it can and will have a devastating effect on the company if they can't turn it around. It's really sad how far companies can fall, I worked 6mos for a company as a turnaround consultant that had 17 straight years of financial losses, banks and various "loan shark" type commercial lenders owned all of their assets, making payroll every pay period involved convincing one of your lenders to increase the companies indebtedness. In the end the owners disappeared and the bank took over the building, the employees came to work one morning and the doors where padlocked.