z. betty: but the success was not due to bigger and better ships aimed at a ballooning population of themerican middle class. by registering ships under foreign flags, like liberia, companies avoided u.s. labor laws and tax regulations that regular land-based tourism was forced to follow. between 1970-2014, the passenger load grew more than 4000%, from 500,000 to more than 21 million cruisers each year. the industry's environmental practices and working conditions have drawn a lot of scrutiny. in the last several years, the industry has been plagued with a series of incidents that have hit the headlines and scared passengers and public alike. sick at sea. >> a royal caribbean cruise forced to turn back. people get the norovirus. betty: from outbreaks on a separate cruises last year to an ebola scare that created panic. >> we knew something bad was happening. betty: to the devastating crash of the costa concordia that killed 32 people and landed its captain in prison. and then there was the infamous "poop cruise." uphuman waste was piling outside of their doors. betty: when a power outage

z launches his service. more on that next. ♪ betty: music mogul jay-z is making a splash in the music streaming business withby the company in january for more than $50 million. some of the world's biggest pop stars join him on stage to endorse it last night. many of them co-owners including his wife beyoncÉ. they say tidal is friendlier to artists. such drivers will get access to exclusive content. is there space for another music streaming service? i am terrible at it. i still use itunes. we have more on this with christina. you have pandora and spotify and others that are popping up. >> the have been around for a while. spotify has been around since 2008 and has many millions of users compared to tidal which has 500,000. that is a lot of room for growth. and analyst said it is a crowded space but not a saturated space so there is room for a company to come in and come do something. we are seeing downloads start to decline by quite a lot and we are seeing streaming revenue skyrocket. betty: what will tidal do that is different than the others? >> i was struck by the power that jay-z has. all his friends we

betty liu: you had gwyneth paltrow. you had eva longoria, who has opened restaurants. justin timberlake, jay-z, all these folks.do you think about these celebrities trying to get into your business? >> good for them. >> it's fair play. bobby flay: it creates more awareness in general for the food industry. i think that if somebody like jay-z is involved in a restaurant -- i was talking to mario before we sat down. i said, technically jay-z is your partner, isn't he? he's, like, yeah, we own the spotted pig together. i think that is pretty cool that jay-z is interested in food. when you listen to jay-z's music, he talks about food all the time. >> he is fascinated by it, he loves it. he is not going to build a jay-z cheesesteak place. smart people invest in people that know what they're doing. if i was going to get into the computer business, i would call apple or dell. i wouldn't call my brother's cousin's friend's next-door neighbor who i heard had a good idea. [laughter] the smart business people are obviously paying attention and doing that. other people are just trying to capitalize. it is like putting your