why are some linux distributions not free

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why are some linux distributions not free	1.38	0.8	6688	50	41
why	0.14	0.9	3161	42	3
are	0.57	0.2	1774	81	3
some	0.75	0.6	3186	76	4
linux	0.87	0.5	3061	37	5
distributions	0.02	0.6	4448	79	13
not	0.66	0.7	1754	38	3
free	0.81	0.1	5625	31	4

Keyword	CPC	PCC	Volume	Score
which is not a linux distribution	0.41	0.4	4397	30
why is linux still free	1.11	0.3	5762	80
linux has no installed distributions	1.03	0.5	1369	12
are all linux distros free	0.2	0.8	7146	19
best free linux distribution	0.23	0.4	6451	39
non-gnu linux distribution	0.66	1	8744	72
most popular free linux distributions	0.99	1	8940	74
linux distribution not supported	1.26	0.7	9678	87
please use latest linux distributions	0.23	1	9895	14
what is distribution linux	1.85	0.8	7174	38
what is a linux distribution	1.06	0.7	759	36
what is linux distribution means	1.23	0.4	102	24
is ubuntu a linux distribution	1.64	0.8	105	14
what is meant by linux distributions	1.78	0.1	6461	82
difference between linux distributions	1.56	0.9	8313	5
type of linux distribution	1.27	1	9812	61
explain various distribution of linux	1.83	0.7	8895	56
is linux is free	0.45	0.4	4403	48
why linux is free and open source	0.89	1	657	89
linux free available vs free	0.98	0.9	6174	11
is linux os free	0.75	0.7	1329	41
is linux ubuntu free	0.89	0.2	7484	42
is linux free to install	0.51	0.3	4391	56
is linux server free	1.01	0.4	5583	3
is linux free to download	1.24	0.1	259	45
is linux still used	1.56	0.6	2758	85
is linux still used today	0.15	0.8	2746	8
linux is freely developed and considered	1.33	0.5	3759	3
is linux virus free	0.74	0.8	6752	69
linux is freely developed	0.95	1	9703	29