Perhaps, but delisting would drive them even further from the public investors that they seem to need to survive. Going private might be a better option than delisting with the negative association that has, imo. Also cutting expenses does not seem to be in their DNA.
If they delist from US, they will still be in Toronto. Public investors are only needed if there is need for cash without sales or loan. This is not the case here, just because IPCI has sales. They can survive without any other funding, but they simply have to cut expenses despite how the DNA might be. A company without income and cash would be in very deep trouble after delisting, but for IPCI it's something else.