If people incurr losses, they didn't do their DD. Tough luck. Already last year it was clearly stated in the financial results: Financials-clean-1030-am.pdf (zentek.com)

BDO (auditor) stated: Substantial Doubt About the Company's Ability to Continue as a Going Concern

The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern. As discussed in Note 1 to the consolidated financial statements, the Company has suffered recurring losses from operations and has an accumulated deficit that raise substantial doubt about its ability to continue as a going concern. Management’s plans in regard to these matters are also described in Note 1. The consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.

Zentek stated: The technology industry presents a high degree of risk and there can be no assurance that the Company’s research and development will result in profitable operations. The Company’s ability to meet its obligations arising from normal business operations, continue its research and development, and generate future profits is dependent upon its ability to obtain necessary financing. While the Company has been successful at raising funds in the past, there can be no assurance that it will be able to do so in the future.

Time will tell, DYODD