It could be that Auster had so much work he didn't need to advertise.
1	It	it	PRON	PERS-SG	_	3	nsubj	_	_
2	could	could	AUX	PAST-AUX	VerbForm=Fin	3	aux	_	_
3	be	be	VERB	INF	VerbForm=Inf	0	root	_	_
4	that	that	SCONJ	_	_	6	mark	_	_
5	Auster	Auster	PROPN	SG-NOM	Number=Sing	6	nsubj	_	_
6	had	have	VERB	PAST	Mood=Ind|Tense=Past|VerbForm=Fin	3	csubj	_	_
7	so	so	ADV	_	_	8	advmod	_	_
8	much	much	ADJ	POS	Degree=Pos	9	amod	_	_
9	work	work	NOUN	SG-NOM	Number=Sing	6	obj	_	_
10	he	he	PRON	PERS-P3SG-NOM	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	13	nsubj	_	_
11	did	do	AUX	PAST-AUX	Mood=Ind|Tense=Past|VerbForm=Fin	13	aux	_	SpaceAfter=No
12	n't	not	PART	NEG	_	13	advmod	_	_
13	need	need	VERB	INF	VerbForm=Inf	9	acl:relcl	_	_
14	to	to	PART	_	_	15	mark	_	_
15	advertise	advertise	VERB	INF	VerbForm=Inf	13	xcomp	_	SpaceAfter=No
16	.	.	PUNCT	Period	_	3	punct	_	_
