Thank you for asking this important question. It's a crucial factor in assessing the initial token distribution and potential centralization risks. Let me address each of the three networks:
EOS:
Yes, EOS had a significant ICO. It conducted a year-long token sale from June 2017 to June 2018, raising approximately $4 billion. This was one of the largest ICOs in history.Telos:
Telos did not have an ICO or pre-sale. It was launched as a fork of EOS with a focus on more equitable token distribution. The initial distribution was based on the EOS snapshot, but with caps on large account holdings.