Why the risk of marketing trusts & stock market speculations is lower for EEG devices which are built from our own printed circuit board, TGAM modules, & ADS1115 chip than the risk of products which are based on the ADS1299 EEG chip from Texas Instruments?

We are reviewing low-cost high-quality EEG devices since at least tree years: https://www.linkedin.com/in/peter-gamma-7920031ab/?originalSubdomain=ch But we made very negative experiences with EEG devices which contains the ADS1299 EEG chip from Texas Instruments. These EEG devices are for instance OpenBCI modules from www.OpenBCI.com, the ADS1299EEGFE-PDK Evaluation board from Texas Instruments, OpenBCI modules sold on Aliexpress and eBay, …