Celtics have won 17 championships, and Lakers 16 - the two teams with the most championships. So yes, in many ways they are the most successful franchises in the NBA.
Manchester United
There are successful Franchises from every industry. It just depends what industry are you interested in or focused into.
1.CELTICS=2.LAKERS=
Most video game and computer-related sites, such as MMOHut, GamesRadar, and Kotaku, offer articles comparing the pros and cons of various MMORPG games. By far, the most successful MMORPG game is World of Warcraft, with iterations of the EverQuest and Guild War franchises being some of its more successful competitors.
Vaccination has been the most successful approach to controlling viral diseases.
Oil
nolan Ryan
Because he has starred in many films including About a boy and had the lead role in one of the most successful film franchises to date - Harry Potter.
swimming
One Direction
Some of the most reputable cleaning franchises include Vanguard Cleaning Systems, Jan-Pro Franchising, and Stratus Building Solutions. You can find a list of the top 10 cleaning franchises at the website Entrepreneur.