No, basically Valve is just hosting/sponsoring 4 events a year now. Doing well in one major will likely help you get invited to the next one, but there is currently no guarantee.How are majors relevant for participating in TI6? Are only major winners directly qualified?
The majors do have $3 million prize pools, and a $1.1 Million grand prize, so there is a ton of motivation to qualify and do well.
Liquid is actually one of the qualifier teams, I believe 4 of the top 8 teams came in though the qualifiers.