Public broadcasters levy a compulsory fee, but relatively few people pay cable or satellite broadcasters for extra channels.
He told the BBC's Andrew Marr Show: "It may come in time and, at that time, it is possible that we could adopt a part-funded by a compulsory fee and part-funded by subscription [system], but we're not there yet.
Wales is the first country in the UK to introduce a compulsory fee for bags.
Ticket companies are meant to display all compulsory fees upfront under the Advertising Standards Authority's code of practice and earlier this year seven major ticket companies, including Ticketmaster, agreed to do this.
An OFT investigation in July led to 12 airlines – including Ryanair and easyJet – agreeing not to hide charges until the end of the booking process, and instead include all compulsory fees in the headline price.
One of these is the APR (annual percentage rate of charge), which takes account of not just the mortgage rate, but also any compulsory fees and charges associated with the mortgage.
Television is dominated by the state provider, Croatian Radio-Television (Hrvatska Radiotelevizija; HRT), which derives a good portion of its revenue from a compulsory subscription fee.
Would news, the Proms, children's programming, and their like still be provided in the absence of a compulsory licence fee?
What is really on trial, though, is the trust placed in the BBC, partly in return for a compulsory license fee that funds its budget, and partly built from many interwoven strands that reach deep into the national memory.
Most Israelis got their ideological instruction from movement newspapers, and their news fix from independent broadsheets and tabloids, as well as from commercial-free state radio, run by the Israel Broadcasting Authority and funded by a compulsory yearly fee.
Over half of children now have a TV set in their bedrooms, as do a staggering 36% of the under-threes, according to a recent survey by the Independent Television Commission.Given this fierce competition, it is no surprise that the commercial channel-operators are furious about the BBC's plans, particularly when the corporation is using a compulsory licence fee to finance them.
