According to PwC the next decade will see 30% growth a year, with the value of sharing-economy estimated to reach $335 billion by 2025.

The forecast came from PwC partner David Trunkfield during the 2015 ABTA Travel Convention in Greece. He disclosed that 17 peer-to-peer companies worldwide are now worth more than 1 billion dollars each, including Uber and Airbnb.

He highlighted Airbnb as being larger than the biggest traditional hotel chains while others continue to grow exponentially. In fact Airbnb reported 150 million guest stays last year, more than Hilton – the largest hotel group – with 127 million.

That growth is unlikely to be pushed off course despite headwinds such as increased regulations, safety issues and taxation, according to Trunkfield.