An anonymous reader writes "In a letter released on Tuesday and addressed to the FCC chairman, a group of the U.S.'s top ISPs have warned that if the FCC re-classifies the internet as telecommunications, then innovation would slow or halt and network upgrades would be unaffordable. 'Under Title II, new service offerings, options, and features would be delayed or altogether foregone. Consumers would face less choice, and a less adaptive and responsive Internet. An era of differentiation, innovation, and experimentation would be replaced with a series of 'Government may I?' requests from American entrepreneurs.' They add, 'even the potential threat of Title II had an investment-chilling effect by erasing approximately 10% of some ISPs' market cap.' Ars Technica highlights earlier doomsday predictions by AT&T. The FCC is scheduled to vote May 15 on the chairman's recent proposal encompassing this reclassification option that the ISPs vehemently oppose." Reader Bob9113 adds that a protest is planned for the same day by those who oppose the FCC's plans.