Well, when the product, tokenomics, and team are the perfect mix, any fundraising method is sure to get success. In fact, ICOs can be successful if supported by good products and market ecosystems, unfortunately, many ICOs are used to cover up fraud, so many investors doubt it. In fact, ICO can be as successful as OP's explanation.
This is the importance of conducting an in-depth project analysis. We have to analyze the product well, is it really useful or just bullshit, besides that with the support of a unique team and tokenomics, the project will definitely give a good color.