relationship complications

so my bf turned 19 yesterday and still lives at home. I have nothing wrong with that as of right now because he was not ready to live on his own yet, but his parents still control his life. I had a bunch of things planned for his birthday tomorrow and planned on seeing him. his parents and him both knew it. so, last night I texted him and asked when he was heading over, he texted and said, "my parents said I have to stay home tonight." he doesn't see anything wrong with that. it is so frustrating to me. his parents literally do this all the time. he always listens to them and never talks back, so I wish he would at least stand up to them at some point. I get that it's their house and their rules, but seriously? He is an adult and it was his birthday and his parents told him he couldn't see me. it kind of blows my mind. I talked to him about it, and he apologized a ton and he felt bad, but the thing is, it's not his fault. they give him a curfew of 11pm on weekends and 10 on weekdays, even though he is in college now. the thing that really bothers me, is that when his parents say they want him home, they don't even do anything. they did nothing last night for his birthday at all. they all just sit there and look at each other I guess. we have been together over a year and his parents still won't talk to me. I've done nothing to upset them and I always try to have conversations with them, and they look at me like they are better than me. I just don't know what to do. I plan on joining the military here in about a year and move away, and I could see him still living at home being 20 and doing everything his mom tells him to do. I love him to death, but his parents are really getting in the way. we aren't even allowed to see each other 2 days in a row. I don't know if I should just stick it out, or end it now. im super confused on what to do. any advice would be so helpful