But the Trust did find that it may slow the growth of pay TV and contribute to the shrinking of DVD rental market . • Other content providers must have access to the platform . • Any quality standards for internet service providers must be applied on a fair , reasonable and non-discriminatory basis . • A Trust review , 12 months after its launch , will assess the effects Canvas has on the partner 's incentives to syndicate their content to other platforms . • The platform must remain accessible without a subscription . • The BBC must return for further approval if costs exceed those projected by more than 20 % in any one year . • The BBC must report on whether the proposed accessibility features , such as audio description , have been incorporated .