I think that with the right ideas and some understanding how bussines is done you could make it a career. Unfortunalty I think you won't make enough money with landscape photography, there are just too many people doing this for a rather small market.
What I would do is events, not only weddings (also crowded), but there are many other events you could think of. At most of these events there are people taking photos, mostly dads, moms, friends, partners and so on. Their pictures are maybe okay, but as a photographer you can do better, and this is worth something.
I'm not a pro, but I like to show you what I mean. I was asked by a friend of a friend who saw me taking pictures at kids birthday party, if I'm interested to take pictures at the show of their sportsclub (some kind of gymnastics). I said yes, I just can't guarantee anything, because I never did anything like this before. The event was indoors with colorfull lighting; I shoot the whole thing with my 350D and a 50mm f1.4 (the only thing fast enough I had back then). The pictures turne out quite good; I asked them If I should make calenders from the best shots; they agreed, and I organised everything, sent the calenders directly to them they paid them. And even though I did it because they were friends of friends, they paid me, it was 200$. I did this 2 more times, until they reorganized the event, and somebody else took care of a photographer. They just asked a friend of them with a camera, but the pictures didn't turn out well, so after one event they asked me again to do it.
I think there are many events you can shoot, and there are many people willing to pay some money for that. There are pet shows, car meetings, dance events, many kinds of sports. There are a few important points you should look for:
-your pictures must be good (not perfect, you need many good pictures in a short time)
-sell yourself; go out to an event, ask if you can take pictures, show them some, and sell the rest (it is not analog time anymore, where film and printing cost money, If you can't sell them, throw them away)
-be creative with your ideas about things / events you could photograph
-good service, react fast to the wishes of customers, offer them many things (nowadays you can print pictures on almost anything), show them what you could organize them, and do not wait until they ask
-organize your workflow; time is money, and as a pro you don't have time for a lot of PP and organizing, do it once and to it right.
I know, it is a big decission to start a new bussines, but photography is something you can start small; you basically need only a small kit (with some quality in it), good photographic skills, some idea and a bussines card. If you have some free time just go out and try it.